A hard decision can be differentiated from "easy" decisions because unlike easy decisions, no sensory input can achieve majority.
If you are saying that we make our decisions are based on sensory input, then what about "hard" decisions then? Dont your "sensors" conflict against each other in a hard decision? Often achieving equal consequences for all options that was though of?
Then there must be an "X" factor in the equation. Which is free will.
Yay!!!