Reading the paper, this seems kind of silly. The argument essentially is. The universe is really big. It would be weird if we were the only thing alive in it,

Reading the paper, this seems kind of silly. The argument essentially is. The universe is really big. It would be weird if we were the only thing alive in it, so probably there are other life forms out there. Given enough of them probably some are conscious and made out of different stuff then we are. And sure, fair enough. That seems plausible. But it also seems like not a very interesting argument. It is essentially just saying the universe is big, therefore all the possibilities are out there.