1. I think one of the words " Built " or " Constructed " suits best, if its a completed job. Or else, if it is still on designing stage ( i.e. the designing is over but actual construction has not started yet) you can say " designed".
2. "develop and sharpen their own reasoning abilities" simply means people teach the computers to "think for themselves" or to develo
To my knowledge a simulation means a set of programmes which executes a set of commands in a sequence. For an insrtance if you play a Flight simulator for the first time you may find it extremely difficult. But as you practise and play more you can see it's the same thing over and over again. Ultimately you can master the simulator.