Being "exploratory" does not mean one is either capable or qualified. No matter how many times one says it again.
Rapists are exploratory. Rats are exploratory. ******ates are exploratory.
The "can" here flies in the face of the mess we've made on this planet, the "must" is basically a relgious belief. The more emphatically held, the more others doubt it.
There are no "musts" in science.
Gee, Lin, tell us how ya' really feel............
With that point of view, its' a wonder mankind even made it this far.