Originally Posted by
Ceruhe
There are so many unwritten things in regards to Expedtions, I'd call it fraud if I had paid for it. There are so many things wrong with Expditions which made me quit them entirely, the problem as you described above is one of the major reasons as well. I'm sticking to my "phase"-hypothesis, which I couldn't pinpoint to anything reasonable as far as patterns are concerned in terms of time(s) (be it actual time, times you sent explorers to find colonies, times you won/lost a colony, w/e). Whenever triggered, you'd either find an abundance of good colonies/resources or you simply wouldn't for the life of yours and just wasting Explorers left and right.
Be there done that, raged hard.