Common sense is not something one would associate with Jebra.
I wouldn’t hire him to clean toilets at rest stops on the interstate.
My concern is that on the way out of the race, Jeb will be more effective in trashing the eventual nominee and will provide continuing fodder to the Clintons (his “sister” as Barbara would put it) so that they can put the nominee at a disadvantage, perhaps in the forlorn hope he can more effectively run in 2020.