Pick a tool

Three tools help you understand how AI really works; three help you use it well at work. Everything runs locally in your browser.

Understand AI · Evaluating models

Confusion Matrix Calculator

“Read a model’s confusion matrix the way a manager reads a P&L.” Enter the four numbers from any model evaluation — or a vendor’s claim — and see what the model is actually good at, in plain language.

Model says:
POSITIVE
Model says:
NEGATIVE
Actually
POSITIVE
True Positive — hit
False Negative — miss
Actually
NEGATIVE
False Positive — false alarm
True Negative — correct pass

Tip: precision answers “when it raises a flag, how often is it right?” — recall answers “of all the real cases, how many did it catch?”. A vendor quoting only accuracy is telling you the least interesting number.

Use AI at work · Choosing the right tool

The Six Questions

Answer six questions about your problem and get a recommendation: rules, machine learning, generative AI — or no AI at all. Matching the problem to the tool is where most projects are won or lost.

Use AI at work · The economics of AI projects

AI Project ROI Calculator

A back-of-the-envelope sanity check before anyone says “yes” in a meeting. Enter what the project costs and what it realistically saves — the calculator does the payback math and flags the classic failure patterns.

“Loaded cost” = salary + benefits + overhead, typically 1.25–1.4× gross salary. Adoption rate = share of eligible work that actually goes through the tool.

Understand AI · Myths and misconceptions

AI Myths Quiz

Ten statements you’ll hear in meetings, headlines, and sales pitches. Which are myths and which are facts? Each answer comes with the short version of why.

Score0 / 0 answered
Understand AI · When data misleads

Spot the Bias

Six real-world scenarios — some famous, some painfully common. Name the bias before it names you. These are the traps that quietly break AI systems long before the algorithm gets a chance to.

Score0 / 0 answered
Use AI at work · The delegation mindset

GenAI Delegation Checklist

Treat a generative AI assistant like a bright, tireless, occasionally overconfident new intern: delegate freely, verify always. Run this checklist before you hit send on any AI-assisted work.

Tick items as you go — the verdict updates live.