Priorities - A: high, B: medium, C: low; Status - _: unfinished, X: finished, C: cancelled, P: pending, o: in progress, >: delegated. Covey quadrants - Q1 & Q3: urgent, Q1 & Q2: important
 A1 X Make exam questions for CS161 {{Tasks:749}} (CS161.Teaching)

## Notes

### 2. reeality

``` <e1f`> ,reeality
<igbot> I heard reeality is a new dilbertesq/UFesq comic strip: http://www.ee.ryerson.ca/~elf/reeality
```

Chat with igbot on kornbluth.freenode.net%23emacs

### 1. total-difference

```(defun sacha/total-difference (list)
"Computes the sum of the differences between successive items in LIST."
(let ((distance 0))
(while (cdr list)
(setq distance (+ (abs (- (car list) (car (cdr list)))) distance))
(setq list (cdr list)))
distance))
```

I used this to calculate the total distance travelled by a read/write head given the list of tracks.

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