1. What you are seeing/hearing
2. What you are thinking
3. What you are reading
I like this idea, although it sounds very tricky in theory. Must give it a go.
On the other hand Buckminster supposedly wore three wristwatches* which were set to the following times:
1. Where you started from
2. Where you are going
3. The time at home
It's hard to believe anyone in this day and age was bother with writing right across a notebook page or having one watch in, like some kind of LOSER.
* I do like the term "wristwatch". It sounds so overdone. Like saying "omnibus" for "bus" and so on.