I want to see twitch play super Mario 64 and just get one star.
This is basically abiogenesis. Whether or not the right action happens is random chance.
I was wondering the implications of doing this on a plat former, getting people to for example say forward enough and jump at the right time to successfully make it across a gap would be very difficult, if indeed the emulator could press up quickly enough to register as say 'holding the analogue stick forward'.
As for your second point, its not really that random, if the majority want to go say left, then eventually the character will generally move about to the left direction. If you created a program to actually randomly press buttons, it would take much much longer to even leave the first town.
Unfortunately given the confined nature of this ledge we find ourselves at, it will be improbable to make it across going only 'right, up or left'. Down will eventually be registered and restart the cycle.