I am being serious. I have studied Master Lee's life. He has taught me a great deal. These are documented facts, eye witness accounts.
Ok. Let's break it down then... Moving three feet in .005 seconds is simply just not possible. A physics teacher (Howard!!) could tell you how fast that really would be.
Same thing with the 300 lbs sandbag. Bruce Lee was never able to generate that kind of force.
The only feat which may be doable, is the can trick.
Remember that anything that Bruce Lee was able to do, can be done by someone today.
YIP
Zack