Nah it doesn't build faster. What happens is the percentage bar updates every second. So lets say a worker gets 8% per second. The building will update the percentage if you click on build a new unit or cancel a previous unit. So all you do is update the percentage bar, so it appears quicker. For example, lets say a unit builds at 10% per second. If you click a build function 5 times a second, then you'll see 2%, 4%, 6,%, 8%, 10% in that second. All it does is update the percentage bar everytime you click, the building time really takes the same amount of time, so don't bother wasting your strength clicking
