Everything is theoretically impossible

“Everything is theoretically impossible, until it is done.” - Robert A. Heinlein

To demonstrate the truth in the above quote, one can just look at the best times athletes achieved over the years.  In the early sixties, nobody thought it was possible to run the 100 metres (100 yards those days equal 91.44 m) in under 10 seconds. 

However in 1968 Jimmy Hines broke the 10 second mark – the impossible was achieved.   Do you think Jimmy Hines achieved it because he thought it was impossible?  Definitely not.  I am convinced he said to himself:  “I can do this!” 

Today Usain Bolt’s world record is standing at 9.58 seconds and even women are now running it in less than 10 seconds.  Can it be done in less than 9 seconds?   Theoretically no, but it is possible.