Using Generative AI to Create Compelling Closing Arguments in Complex Litigation

Merlin - Using Generative AI to Create Compelling Closing Arguments in Complex Litigation by John Tredennick and Dr. William Webber
Image: John Tredennick, Merlin Search Technologies with AI.

[EDRM Editor’s Note: The opinions and positions are those of John Tredennick and Dr. William Webber.] 


In our recent article “Understanding GenAI Response Limits: What Every Legal Professional Should Know,” we explored how legal professionals can overcome the traditional length limitations of Large Language Models that constrain an LLM’s ability to generate sophisticated legal documents. Our example of using GenAI to create a closing argument generated significant interest, as it demonstrated how these techniques could dramatically reduce the time and cost traditionally required for trial preparation.

Building on that foundation, we’re launching a series examining how GenAI can transform trial preparation by analyzing complex litigation materials and generating persuasive closing arguments. Using the landmark BP Deepwater Horizon Phase One liability trial as our case study, we’ll demonstrate how AI can process vast amounts of testimony and trial exhibits to construct compelling arguments for each party involved.

Using the landmark BP Deepwater Horizon Phase One liability trial as our case study, we’ll demonstrate how AI can process vast amounts of testimony and trial exhibits to construct compelling arguments for each party involved. 

John Tredennick and Dr. William Webber.

TransOcean’s Closing Argument

This first article focuses on TransOcean’s closing argument, showing how our DiscoveryPartner Platform leverages advanced AI capabilities to analyze trial materials and generate a strategically structured argument.

For those not familiar with the different roles played by key parties involved in the spill, here is a refresher:

Transocean was the owner and operator of the Deepwater Horizon offshore drilling rig, which it had leased to BP for drilling the Macondo Well in the Gulf of Mexico. On April 20, 2010, a catastrophic blowout led to an explosion that killed 11 crew members and sank the rig, triggering the largest marine oil spill in history. In the ensuing legal proceedings, Transocean faced significant liability alongside BP and Halliburton, ultimately agreeing to pay a $1 billion civil penalty for Clean Water Act violations and reaching settlements with both the Plaintiffs’ Steering Committee ($212 million) and BP.

In this article, we’ll examine Section IV of TransOcean’s closing argument, which focuses on BP’s critical failures and responsibility for the disaster. While we present only one key section of the argument here for detailed analysis, you can access the complete GenAI generated closing argument here or at the bottom of this article. This section provides a compelling demonstration of how GenAI can analyze complex trial materials and construct persuasive legal arguments.

Here is the fourth section of the closing argument prepared entirely by different versions of Generative AI Large Language Models working in tandem using DiscoveryPartner to find, analyze and report on key information from the liability phase of the BP trial.

IV. BP’s Critical Failures

Your Honor, having established BP’s position of ultimate authority and control over the Macondo well, we must now examine how their management philosophy and operational decisions created the conditions that made this disaster not merely possible, but inevitable. The evidence reveals not just isolated mistakes or unfortunate oversights, but rather a systematic pattern of negligence flowing directly from their position of authority and driven by a corporate culture that repeatedly and consistently prioritized cost-cutting over safety.

Let me begin with what the evidence shows about BP’s corporate culture, because it is this culture that transformed their operational authority from a mechanism for ensuring safety into a tool for pursuing profits at any cost. Under CEO Tony Hayward’s “Forward Agenda,” BP aggressively pursued cost reductions while simultaneously reducing management layers, explicitly prioritizing production and risk-taking over safety culture (BP_00001402 §13, BP_00001419 §1).

The evidence paints a clear picture of systematic cost-cutting at the expense of safety. BP targeted an aggressive 20% cost reduction across their operations (BP_00001402 §1, BP_00001402 §19). This wasn’t a gradual, carefully considered efficiency program. Instead, it created intense pressure throughout the organization to cut corners on crucial safety measures. The company implemented a bonus structure that explicitly encouraged rapid drilling (BP_00001402 §3, BP_00001402 §22), creating direct financial incentives to prioritize speed over safety.

We heard testimony that BP’s management was under constant pressure to complete wells quickly (BP_00000003 §19). This pressure wasn’t abstract – it manifested in concrete decisions that compromised safety. Time and again, when faced with a choice between a safer, more expensive option and a riskier, cheaper alternative, BP consistently chose to prioritize cost savings over safety. As documented in their own records, BP’s management made deliberate choices to proceed with operations despite known risks (BP_00001402 §4).

Most troubling, Your Honor, is BP’s pattern of willfully ignoring critical safety warnings. The evidence shows that expert recommendations for safety improvements were routinely dismissed or disregarded (BP_00001402 §21, BP_00001402 §14). Internal audits revealing serious safety deficiencies were left unaddressed (BP_00001061 §4, BP_00001123 §1). The ModuSpec audit specifically identified thousands of hours of overdue maintenance on essential safety systems (BP_00001073 §10), yet BP chose to return equipment to service without addressing these problems.

Even more damning, BP had both the financial resources and the legal obligation to implement necessary safety measures (BP_00000003 §19, BP_00001402 §4). The American Petroleum Institute’s Recommended Practice emphasizes the importance of safety and environmental integrity in drilling operations (BP_00000979 §1), guidelines that BP consistently failed to follow. They made these choices not because they lacked the means to do better, but because they prioritized cost savings over safety at every turn.

This wasn’t just poor management, Your Honor. This was a deliberate corporate strategy that created an environment where disasters like this became not just possible, but probable. The evidence shows that BP’s corporate culture systematically undermined safety protocols (BP_00001402 §4), ignored audit findings (BP_00001061 §4), and created an environment where meeting cost and time targets took precedence over maintaining crucial safety standards.

Your Honor, this culture of cost-cutting and disregard for safety manifested itself in a series of critical technical and operational failures that directly led to this disaster. Let me walk you through the most egregious of these failures, documented in detail by the evidence before this court.

First, consider BP’s failures in well design and construction. The evidence shows that BP proceeded with an inadequate well design that violated federal regulations (BP_00001355 §6). Their own documents reveal that the well design consistently lagged behind operations, creating chaos on the rig and forcing numerous last-minute changes that compromised safety (BP_00001266 §2, BP_00001359 §14). They continued drilling despite knowing that even slight changes in mud weight could lead to well control problems, showing a reckless disregard for basic safety protocols.

The cement job failures are particularly telling. In what can only be described as an unconscionable attempt to save money, BP chose to use leftover cement that contained incompatible materials (BP_00001310 §7, BP_00001422 §3). Even more disturbing, they made the deliberate decision to use only six centralizers instead of the recommended twenty-one, despite clear warnings about the increased risks of channeling and cement contamination (BP_00001415 §15, BP_00001251 §2).

The challenges of deepwater cementing operations required special consideration of temperature effects and proper mud displacement (BP_00001104 §2). Yet BP’s documentation shows they failed to properly maintain critical equipment and ignored essential safety protocols (BP_00001514 §1). These weren’t complex technical decisions requiring careful balancing of competing factors. These were clear examples of BP choosing the cheaper, riskier option over the safer alternative.

But perhaps the most shocking evidence concerns BP’s maintenance failures, particularly regarding the Blowout Preventer – the last line of defense against exactly this type of disaster. The evidence shows that the BOP had not been recertified for nine years (BP_00001419 §6). A September 2009 audit revealed significant maintenance deficiencies (BP_00000859 §69), with documentation showing thousands of hours of overdue maintenance tasks (BP_00000872 §14).

Even more alarming, BP modified the BOP system, reducing its pressure rating from 10,000 psi to 5,000 psi without proper risk assessment (BP_00001359 §7). They failed to implement available safety technologies such as acoustic trigger systems and wireless activation methods (BP_00001359 §8), technologies that could have prevented this disaster.

The ModuSpec audit findings paint a devastating picture of BP’s maintenance practices. The audit revealed significant maintenance deficiencies, including overdue tasks and non-operational critical equipment (BP_00001061 §1). BP’s maintenance documentation for critical components was either missing entirely or woefully inadequate (BP_00001061 §9). They failed to implement proper inspection and testing protocols required by industry standards (BP_00001312 §22).

But the most catastrophic failures occurred in BP’s decision-making during the critical moments leading up to this disaster. The negative pressure test failures are particularly damning. BP’s well site leaders failed to prepare expected bleed-off volumes (BP_00001552 §21), which severely hindered their ability to diagnose problems. They misinterpreted critical test results and proceeded with operations despite clear pressure anomalies (BP_00001418 §4).

Most troubling of all, less than an hour before the first explosion, BP’s senior drilling engineer and well site leader had a crucial conversation raising concerns about the validity of the test results. Yet they took no corrective action (BP_00000001 §19). Think about that, Your Honor – they recognized the danger signs but chose to proceed anyway.

The evidence shows that BP had over 30 minutes between identifying these issues and the blowout – more than enough time to take decisive action that could have prevented this disaster (BP_00000001 §20). Instead, they proceeded with operations despite multiple pressure anomalies and clear indications of well integrity issues (BP_00000859 §37, BP_00000950 §38).

This pattern of technical and operational failures wasn’t random or coincidental. It was the direct result of BP’s systematic prioritization of cost savings over safety, speed over proper procedure, and financial goals over operational integrity. The evidence shows a company that repeatedly chose the expedient path over the safe one, with catastrophic consequences.

Your Honor, as we examine these technical failures in detail, let us remember that behind every pressure reading, behind every maintenance log, behind every rushed procedure was a fundamental choice by BP to prioritize speed and cost savings over human life and environmental safety.

Beyond these operational and technical failures, the evidence reveals a pattern of systematic disregard for regulatory requirements that is equally troubling. BP didn’t just fail to follow regulations – they actively misrepresented crucial information to regulatory authorities.

Consider the evidence about pressure testing. BP inflated pressure test results in their permit applications, claiming figures of 13.0 ppg when the actual figure was 12.55 ppg (BP_00000859 §4, BP_00001354 §3). This wasn’t a minor clerical error – it was a deliberate misrepresentation of critical safety data. Their own documentation shows that BP’s well design calculations contained concerning omissions in pressure test load cases (BP_00000859 §27).

The American Petroleum Institute’s Recommended Practice emphasizes the importance of safety and environmental integrity in drilling operations (BP_00000979 §1). Yet BP routinely bypassed these safety requirements through creative reclassification of procedures. The documents show that BP failed to maintain proper inspection and testing protocols as required by industry standards (BP_00001139 §26). A comprehensive Major Accident Hazard Risk Assessment identified numerous safety issues that required attention (BP_00001092 §1), yet BP failed to address these concerns.

The Transocean Well Control Handbook emphasizes the critical nature of monitoring and managing pressure during drilling operations (BP_00001455 §14). However, BP failed to implement these essential safety protocols. Their oversight responsibility extended to ensuring proper cementing practices and wellbore stability management (BP_00001140 §4), yet they consistently fell short of these obligations.

What makes these regulatory failures particularly egregious, Your Honor, is that they weren’t isolated incidents. The ModuSpec assessment identified significant maintenance issues prior to the incident (BP_00000872 §2), which BP failed to address despite their oversight responsibility. Their disregard for safety protocols is evidenced by missing or inadequate maintenance documentation for critical components (BP_00000864 §11).

The cumulative effect of these failures created what can only be described as a perfect storm. A September 2009 audit revealed significant maintenance deficiencies, with the BOP not being recertified for extended periods (BP_00000859 §69). The audit identified 3,545 man-hours of overdue maintenance (BP_00000444), demonstrating systematic neglect of safety protocols.

Your Honor, this wasn’t a storm that arose naturally. It was one of BP’s own making. Their approach to well design and operational decisions consistently demonstrated a lack of adequate consideration for critical safety factors. The ModuSpec audit specifically revealed thousands of hours of overdue maintenance on critical equipment (BP_00000864 §1), yet BP continued operations without addressing these serious safety concerns.

The evidence shows that BP failed to properly maintain the BOP system, with audit findings revealing significant maintenance issues that were ignored (BP_00001162 §8). They failed to implement proper inspection and testing protocols as required by industry standards (BP_00001139 §26). The documentation shows systematic failures in maintaining crucial safety equipment and following established safety procedures.

Let me be clear about what the evidence proves: BP’s critical failures were not mere accidents or oversights. Their technical and operational failures, combined with their systematic disregard for safety warnings and regulatory requirements, created the conditions that made this disaster not just possible, but inevitable.

The law recognizes different levels of culpability, Your Honor. There’s ordinary negligence – the failure to exercise reasonable care. There’s gross negligence – a conscious disregard for the rights and safety of others. And then there’s willful misconduct – the deliberate choice to proceed with actions despite knowing the risks.

The evidence presented in this trial shows that BP’s conduct falls squarely within the most serious categories of culpability. The challenges of deepwater operations required special consideration and careful planning (BP_00001104 §1), yet BP consistently chose to prioritize speed and cost savings over safety. They failed to maintain proper oversight of cementing operations (BP_00001139 §4) and ignored critical safety protocols (BP_00001455 §21).

The consequences were catastrophic. Eleven lives were lost. An ecosystem was devastated. And a community was forever changed. These weren’t the result of an unforeseen accident or an act of God. They were the direct, foreseeable, and inevitable consequence of BP’s critical failures and conscious choices.

Justice demands that BP be held accountable for these failures. The evidence compels a finding that they bear primary responsibility for this disaster through their gross negligence and willful misconduct. Anything less would fail to acknowledge the overwhelming evidence of their culpability and would send the wrong message about corporate responsibility in matters of public safety and environmental protection.

While we are not suggesting that a trial lawyer would consider this a final product, it demonstrates the potential for GenAI to dramatically streamline trial preparation by providing a sophisticated analytical foundation that legal teams can build upon, reducing both time and cost while maintaining rigorous professional standards.

Comprehensive Document Integration

For this demonstration, we created a complete digital trial repository within DiscoveryPartner, integrating the transcripts and exhibits from the liability phase of the trial. In that regard we were mirroring how experienced trial attorneys approach closing arguments–drawing connections across all available materials–but with the added power of machine processing and analysis.

The true power of this AI-assisted approach to trial preparation lies in its remarkable accessibility and efficiency. What once required weeks of intensive attorney and paralegal time can now be accomplished in just one to two hours, at a fraction of the traditional cost. For less than $1,000 in LLM costs, legal teams can generate a sophisticated first draft of a closing argument that draws from the complete universe of trial materials.

Looking Forward

This approach represents a fundamental transformation in how legal teams can prepare for critical trial moments. By leveraging generative AI through platforms like DiscoveryPartner, we’re not just making the process more efficient–we’re enabling legal professionals to create more comprehensive, well-supported arguments while maintaining the high standards our profession demands. As we continue to explore these capabilities, we’re discovering new ways to enhance the practice of law while preserving the essential role of human expertise and judgment.

Our experience with the BP trial materials demonstrates that this technology is ready now to help legal teams prepare more effectively for trial. The future of legal practice is not about replacing human expertise, but about augmenting it with tools that make sophisticated legal analysis more accessible and efficient than ever before.

In upcoming articles in this series, we’ll explore how GenAI can construct equally compelling arguments from the perspectives of other parties in the BP trial, demonstrating the versatility and power of this technology in handling complex litigation from multiple angles. Stay tuned as we continue to push the boundaries of what’s possible in legal technology and trial preparation.


View and Download the Complete GenAI-Generated Closing Argument Below


Assisted by GAI and LLM Technologies per EDRM GAI and LLM Policy.

Authors

  • John Tredennick

    John Tredennick (JT@Merlin.Tech) is the CEO and founder of Merlin Search Technologies, a cloud technology company that has developed Sherlock®, a revolutionary machine learning search algorithm. Prior to founding Merlin Search Technologies, Tredennick had a distinguished career as a trial lawyer and litigation partner at a national law firm. With his expertise in legal technology, he founded Catalyst in 2000, an international e-discovery search technology company that was later acquired by a large public company in 2019. Tredennick's extensive experience is evident through his authorship and editing of eight books and numerous articles on legal technology topics. He has also served as Chair of the ABA's Law Practice Management Section.

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  • Wiliiam webber

    Dr. William Webber (wwebber@Merlin.Tech) is the Chief Data Scientist of Merlin Search Technologies. With a PhD in Measurement in Information Retrieval Evaluation from the University of Melbourne, Dr. Webber is a leading authority in AI and statistical measurement for information retrieval and ediscovery. He has conducted post-doctoral research at the E-Discovery Lab of the University of Maryland and has over 30 peer-reviewed scientific publications in the areas of information retrieval, statistical evaluation, and machine learning. Dr. Webber has nearly a decade of industry experience as a consulting data scientist for ediscovery software vendors, service providers, and law firms.

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