Quote from chasinfla:
As for the 'electronic-ization' of the markets, the gadgets are just tools. Markets are and always will be all about people. Eliminate the participants, and you eliminate the market.
The "people" in the market are those who buy and sell. They will always be there. So yes, there will always be "participants" in the market (the buyers & sellers), but there may not always be human middlemen who need to touch each order.
There used to be human operators on elevators. When you got on, they would ask you what floor, then close the outer door, then close the metal gate. Then the operator would turn a wheel to go up or down. When he would come to the floor, he would usually overshoot it and then have to reverse to drop down a couple of inches and maybe back up an inch - all so the passengers would not trip on the mismatch between the elevator floor and the doorway.
Of course now days its all electronic - just like the markets could be.