Engineers building factories

[Flynn]

Which is more efficient, 2 engineers building 2 factories or 2 engineers building 1 factory? Thanks

[BRNKoINSANITY]

The total time to build will be the same, and the cost is the same, but I would do 2 building one and then another. That way you get your first combat unit out in half the time (1st fac is done at 1/2 time instead of both facs being no use till they are done)

[Rediska]

Agree with BRNKoINSANITY

Simple math:
2 builders make their own factories. After1 min you will get 2 facs and nothing. First 2 tanks or another 2 engies will be constructed only after 13 seconds.
Totally: 73 sec = +2 engies.

Instead another way:
1 factory will be done in 30 sec and will start construct units. When 2nd will be done you already will have 2 extra engies (13 sec per everyone + time for rolling out). 2nd fac will start constructing but 1st wont stop.
Totally: 73 sec = +4 engies.

No magic. No equal.

[ZLO_RD]

posting for fun.
You can make question less simple by saying that ingeners may be far away from each other, or for example you are wasting 2-4 mass and 30-40 power, and distance between engineers is like 20-30 seconds, so it may be better to start build by 1 engy and move by another.
Just wanted to say that in game you can have different situations...