We can send hundreds but we didn't. The problem with the current generation of robots is that they pretty much need to have to plan out a full fault tree for ev

We can send hundreds but we didn't. The problem with the current generation of robots is that they pretty much need to have to plan out a full fault tree for every planned experiment and mitigate potential issues with a lot of prepared hardware. Humans can be sent with a fairly generic set of tools, instruments and materials and more readily adapt their plans and experiments too the situation. I'm sure robots get better every generation, but we aren't there yet.