software is cheap and low risk, anything in the physical world is absolutely not. taking orders - yes, but there are no moving parts or liability there. for s

software is cheap and low risk, anything in the physical world is absolutely not. taking orders - yes, but there are no moving parts or liability there. for software you also generate N solutions and evaluate each of them to shore up weaknesses in the current, very nascent, technology. microsoft is sure to be going down this path.