LPS 31 / PHIL 31 — Probability and Inductive Logic

Study tools · Kenny Easwaran · k.easwaran@uci.edu

Everything here is optional and ungraded. Use whatever helps.

Using an AI assistant

If you want to study with ChatGPT, Claude, Gemini, or something similar, download the study guide below and upload it at the start of your chat. Without it, the assistant will guess what notation to use and what material to cover, and may not match what we are doing in this class, and what the exams will be graded on.

AI study guide (upload this to your assistant)

The full scope of the course, our notation and rules, and a verified answer key for every sample problem. Written for the assistant to read, not for you — though you're welcome to read it.

Download the guide

How to study with an AI assistant (read this one)

A short page for you: what to ask for, what the assistant will and won't do with your homework, and the specific ways these tools tend to get this material wrong.

Read it
On homework. The guide asks your assistant not to hand you worked solutions to homework problems, and to give you a similar problem with different numbers instead. Nobody is checking. But almost all of your grade comes from three in-person, closed-book exams, and the homework is the only place you practice doing this yourself before then.

Practice tools

Truth Table Trainer

Practice building truth tables step by step, with as much or as little help as you want.

Open the trainer

Probability Square

Work out probabilities by drawing on a 2×2 square, the way you would on paper — including deciding when there is not enough information to work one out at all.

Open the square
Want a practice tool that works differently? The AI study guide contains instructions for building tools like the one above, so you can ask an assistant to make you a version with whatever changes you want — a different question type, harder sentences, a timer, a format that suits how you think.

This is the one thing on this page that needs a fairly capable assistant. Building a working tool takes a lot of back-and-forth, and free tiers usually run out of room partway through and hand you something half-finished. If you have access to a paid tier, or to an assistant meant for writing code, it works well. If you don't, the trainer above already covers the question types you'll be tested on.
Reminder about the tests. All three are closed book, closed notes, no internet, no AI. You may bring a simple four-function calculator and blank scratch paper.