Old CW4
BANNED
- Joined
- Sep 8, 2006
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- 870
'The ping-pong ball on a string' story used to be taught in some engineering courses as a reminder not to over complicate designs. It went like this---
Seems a guy's wife sometimes had a problem when parking the family car in their garage when she pulled in too far and bumped the wall. The husband hired an engineer who designed a photo-electric eye system with a flashing light and bell which warned the wife when she had pulled in the correct distance. This system was complicated and expensive.
The husband then went to a shade tree mechanic who hung a ping-pong ball on a string. When the wife pulled in the garage the right distance, the ball 'plonked' on the windshield as a 'stop signal.' This 'system' cost about 15 cents and was cheap, simple, effective, fool proof, and trouble free.
Hence, 'remember the ping-pong ball' was often heard in class when discussing complex mechanical designs.
Seems a guy's wife sometimes had a problem when parking the family car in their garage when she pulled in too far and bumped the wall. The husband hired an engineer who designed a photo-electric eye system with a flashing light and bell which warned the wife when she had pulled in the correct distance. This system was complicated and expensive.
The husband then went to a shade tree mechanic who hung a ping-pong ball on a string. When the wife pulled in the garage the right distance, the ball 'plonked' on the windshield as a 'stop signal.' This 'system' cost about 15 cents and was cheap, simple, effective, fool proof, and trouble free.
Hence, 'remember the ping-pong ball' was often heard in class when discussing complex mechanical designs.