What if ?

1) What if the basic function is some curve rather than a straight line
2) What if the division is nonlinear like 4/(1,3) rather than 4/4
3) What if we've gone by biological methods rather than by electromagnetic methods
4) What if someone invented a new device other than a semiconductor device
5) What if some other planet which has not been discovered has life depending on some other element other than Oxygen
6) What if the future computer scientist generations forget about all the theories related to mathematics and physics due to the advancements in Artificial Neural Networks

May be

1) All the computations would've become simpler
2) All the irregular ones would've appeared regular ones
3) Much of the energy would've been saved with the penalty of losing some other things
4) They might have had their own pitfalls like the semiconductors
5) Their life might not be in the similar form like us
6) Computers would rule the world

Still more to come...............