# PP Presentation

## NEEDED: ALGEBRA OF DOING

## Available:

## What is the chance it rained

## if we see the grass wet?

## e.g.,

## Needed:

## e.g.,

## What is the chance it rained

## if we make the grass wet?

## algebra of doing

## algebra of seeing

## P (rain | wet) = ? {= P (wet | rain)

## P (rain | do(wet)) = ?

## {= P (rain)}

** Notes: **

slide 55