There are hacks indeed, but it’s not easy to say if the player reacted to an information he shouldn’t have, or just deduced it/had the feeling he should be ready for some tech/timing.
Those I found often didn’t scout, and then completely changed course blindly, whether in production tab but also to hidden moves on the minimap. I’ve seen one not scout, then double bunker full wall blindly, then unload his bunkers to move his marines towards reapers he couldn’t see).
You must’ve found my topic I guess. You’re welcome.
But if you wanna help, leave your feedback (a comment, a like, and idea or whatever) directly into the thread. The more visible it becomes, the more chances it’ll have to get to the players’ or even the devs’ eyes. 