The argument of "mission critical" was once given for trains and planes and each had their bubble. It was clear that the technology itself would succeed. This

The argument of "mission critical" was once given for trains and planes and each had their bubble. It was clear that the technology itself would succeed. This was the "core of truth" at the heart of each bubble. The mistake was taking this to mean that one should invest in businesses pursuing those technologies. In fact, the thing to do would have been to supply those industries, see general stores and the gold rush.