A HUMAN PERSPECTIVE ON AI

Understand AI.
Put your judgment
to work.

AI can draft a contract, review a file, and answer a client’s question. What should you trust it to do? Start with how the technology works and what it means for your practice.

Read the introduction

By Jonathan Nessler, trial attorney.
For lawyers and business owners.

THE BOOKBY JONATHAN NESSLER
Available in paperback & digital

Before you rely on AI,
understand it.

01 Learn how it works02 Give clear instructions03 Check the answer

INFINITE COUNSEL

When the work changes,
what happens to the profession?

If a first draft takes minutes instead of hours, what should a client pay? How should a firm train its associates? What is the lawyer’s contribution worth?

Infinite Counsel starts with the technology, then follows those questions through billing, staffing, client service, and the prospect of legal expertise available at scale.

Jonathan NesslerTrial attorney · Author · Founder
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IDEAS YOU’LL EXPLORE

01Understand how AI works

Learn how large language models generate answers, why they make mistakes, and what their memory limits mean when you give them a file to review.

02Use it in legal work

Work through prompting, research, drafting, discovery, and document review. Consider what information you can share with a tool and how to check what it produces.

03Rethink the economics of work

Consider what AI means for the billable hour, alternative fees, staffing, client expectations, and the value of professional judgment.

04Consider a world of abundant counsel

What happens if competent legal work can be replicated at scale? Examine AI agents, competition, regulation, and the role of the lawyer in that world.

Written for lawyers.
For anyone thinking about the future of professional work.

A QUESTION FROM INFINITE COUNSEL

What will clients
need from us?

What unique value will human lawyers add in a world of AI-augmented or AI-driven legal services?

Jonathan Nessler, Infinite Counsel, p. 9

That question runs through the book. To answer it, we first need to understand the work these systems can perform and the limits of the answers they give.

Start with the fundamentals

THE JUDGMENT EXERCISE

Would you trust
this answer?

An answer can sound convincing and still leave out the fact that matters. Would you catch it?

Try three fictional scenarios in about two minutes.
A MOMENT OF JUDGMENTSCENARIO 01 / 03

A BUSINESS DECISION

The numbers sound convincing.

THE REQUEST

Our current software costs $2,400 a month. A replacement costs $900 a month, plus a $6,000 setup fee. What would we save in the first 12 months?

Inspect the source note

Current subscription: $2,400/month. Replacement: $900/month. One-time setup: $6,000, paid during the first year. Compare 12 months of each option; assume no other costs.

SAMPLE AI RESPONSEWritten for this exercise
Switching reduces your monthly cost by $1,500. That means you’ll save $18,000 in your first year. The replacement offers a clear financial advantage.
What would you do next?

These examples were written for the exercise. You do not need an account or your own documents.

THE MODEL FIELD GUIDE

Which model fits
your work?

Compare six model families through the work you might give them: research, drafting, document review, and analysis.

Explore the models
Six illustrated professionals personify GPT, Claude, Gemini, Grok, DeepSeek, and Qwen through different ways of thinking and working.

Start with the basics.

How AI works, how to instruct it,
and where it can go wrong.

Browse all AI guidesFor the full discussion of AI and legal practice:
Jonathan Nessler, author of Infinite Counsel
JONATHAN T. NESSLERSPRINGFIELD, ILLINOIS

ABOUT THE AUTHOR

Written from
experience in practice.

Jonathan Nessler is a trial attorney in Springfield, Illinois, and the founder of Integrated Cognition. He writes about AI from the perspective of a lawyer who must answer to clients for the work.

His writing and teaching examine how the technology works, how lawyers can use it responsibly, and what happens to the economics of a firm when familiar tasks take a fraction of the time.

Jonathan NesslerAuthor of Infinite Counsel

INFINITE COUNSEL

The work is changing.
Understand what follows.

Paperback · Kindle · Apple Books
Infinite Counsel by Jonathan Nessler: A Lawyer’s Guide to Understanding Artificial Intelligence and the New Economics of Practice

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Infinite Counsel

Jonathan Nessler

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