Comment New? (Score 1) 53
Weren't R2 units around a long time ago ...
... in a place far far away?
Don't alot of non-geek students write equations on their arm?
10. car phone
9. flashlight (torch)
8. sun dial
7. singing telegram
6. level
5. vibrator
4. paper weight
3. slide rule
2. hammer
1. rock
For God's sake, stop researching for a while and begin to think!