if you could invent anything (to do with computers) what would it be ???

Question: if you could invent anything (to do with computers) what would it be ???
- Keywords:
  computer,
  invention
Asked by 1337skeels to Ben, Jony, Mark on 25 Nov 2011.
- Ben Still answered on 24 Nov 2011:
  
  A brain-computer interface, so that you can program by thinking of ideas and the computer does the calculations.
- Jony Hudson answered on 25 Nov 2011:
  
  A program for getting the computer to solve maths problems. These programs already exist (called “computer alegbra systems”), but I’d like to make a better one and make it open-source.

Question: if you could invent anything (to do with computers) what would it be ???