I was really impressed by WeChat while living in China. Quite a few times I thought "hmm, I wish we had that back home" To counter the argument that it's not t

I was really impressed by WeChat while living in China. Quite a few times I thought "hmm, I wish we had that back home" To counter the argument that it's not true innovation, just a re-combining of existing ideas... what other type of innovation is there?