PSA:the last 100%-busy entity in your line is the bottleneck

[quyxkh]

If your rocket silo is 100% busy, build more (or faster) rocket silos.

If your labs are 100% busy, build more (or faster) labs.

If your belts are compressed, build more etc. factories.

If it's 100% busy, build more of it. Compressed supply lines are a symptom. Compressed drain lines are a symptom.

When _nothing_ is 100% busy, that's a symptom too: build more miners

Factorio is a disease for which more Factorio is the only cure.

[mergele]

I remember a multyplayer game with a friend where we were purely waiting for research to get the third science pack (before science rework) and were constantly adding more and more labs. (Flasks are backing up, more labs! Gears are not enough, more! Assembler can't keep up with flask production, more!) It was pretty fun, then the next flask got unlocked, we looked at the amount of labs we had and thought about what it would take to keep all of that running. yeah, no