Factorio Forums

I decided to do lazy bastard chalenge and i rushed research of rocket silo shortest possible way (with few qol researches), which also ads satellite.
to my surprise, i was not able to build them

1) rocket silo research does not require conrete research, yet you need concrete to build rocket silo
2) satellite requires batteries and solar panels, it's not dependent on them either
it's not gamebreaking issue, just annoying, when you find out, you can't build something, you spent lot of time to research.

This is not a bug, see also here:
[0.14.12] Technology without enough prerequisites

Rseding91 wrote:Finishing a technology has never guaranteed you can build/use everything on the unlock path it has to offer and I don't see this as worth spending any time on as it doesn't effect gameplay at all.

thanks for answer, seems i didn't search thoroughly.

Kovarex says it is a bug, and he fixed several of them. viewtopic.php?t=7732