At first, I considered that it could be the "Defiler," maybe the "Queen," or even the "Science Vessel." After hours of research, I concluded that, without a doubt, it’s the SCV.
The mathematics behind this unit are different from the others. Understanding what really happens when you use "Repair" or "Halt Construction" is not as straightforward as one might think.
I cracked all the numbers and explained why I do think this is the Most Complex unit in the game
And for you? Which unit do you still struggle to fully understand?