I tried to digest what I had just seen. If my assumptions were right and the humans were in charge of everything that required more intelligence than Oktonians possessed there had to be a lot of humans there. At least the reactor and presumably the hydrolysis plant as well had to be manned around the clock. Depending on the degree of automation this would require some five hundred to one thousand humans to keep the show on the road. This was far more than the Oktonians could recruit from the space station. So where had these people come from?
There seemed to be no one standing over them with a gun so presumably they weren't slaves. The technology they were using was little more than Earth technology of the late twentieth century. A people with that kind of technology cannot build space ships like the Oktonians had. And where were the overlords and how did they control the people? My head swam. So many questions and so few answers. I had to talk to Feng. I would see him in the morning. There was no point in calling him now.
Another restless night.
***
I met Feng at ten o'clock as arranged. He was stunned when I told him what I had discovered.
"And you reckon their main activity is on that smaller island you showed me?"
"Still looks like it. There is no alien technology without heat signatures that I've seen. I am still certain the cities are virtually dead. I doubt there is much more activity where I was than what I saw. You would hear the noise of a big city, if nothing else. The rest of the city wasn't lit up either. I bet it's deserted apart from that hydrolysis plant."
"Assuming they use the same system on the island and have humans in charge of the difficult things, how many humans do you think they'd need?"
"Another ten thousand at a minimum," I said wondering where Feng was going.
"There must be a human colony somewhere."
"How do you make this out?"
"We know the Oktonians don't recruit immigrants. They get a few here at the spaceport through the sex, but that would only be a trickle. There is only one other source; the slave trade.
"Can you imagine what a slave costs delivered on Okton4? It's cheaper to buy male and female slaves and allow them to breed. They'd still buy premium slaves from time to time to bring fresh blood or talent in, but they couldn't do it in huge numbers. Don't forget they would only buy the best, they've got low grade labourers and whores enough and that is what the slave trade mostly supplies."
"If they have a human colony, why entice people here on the space station?"
"No one here on Okton4 is an idiot or labourer. Just about everyone who arrives here has some specialised skill. Here they get smart people at bargain rates. That's why they only allow men. Don't forget about the hybrids."
"Makes sense. Where does that get us though?"