IS and WAS for robots

[hlreed]

A natural start for memory in a robot is with detection. With arithmetic, there are 3 conditions with two inputs. Let the inputs be I and R. 1, I is equal to R. 2, I is greater than R or 3, I is less than R.
We make a device that reads I and R, detects the condition, and if the condition is met, writes one of the inputs.
Let output be O. Then if I condition R, O = I else O = 0. The condition is =, >, <.
Now you can write O = I is R or I gt R or I lt R.<p>From is, it is an easy step to was. (was=, was>, was< of course)
Now O = if I condition R, M = I and O = M<p>Write O = I was R (or wasgt or waslt)<p>This is memory of condition. Next is memory of event. Again, we need to detect something and act on it. Condition was easy. How do we define event?

[bwts]

An event is the change of a condition.<p>B)