The study surmises that they (PhD students) generally do not know:
We describe evidence of a “default” postdoc and of “holding patterns” that suggest a need for increased attention to career planning among students, their mentors, graduate schools, and funders.[1]
With the availability of information on the internet and their education levels, I have a hard time believing PhD students don't know about the job prospects. More likely they continue to believe that they will be the exceptional case.
The same thing 99% of the human race does and always has done, and the 1% who are wasting their lives trying to become astronauts or movie stars should also do: accept that the job you ideally want is not available, and learn to enjoy a job you can get.
My remarks were certainly addressed also, by the same logic, to people trying to become Olympic athletes. Founding a startup isn't quite the same, because there isn't so much a fixed quota of startups. It is possible to win without having to make ten thousand other people lose.
We describe evidence of a “default” postdoc and of “holding patterns” that suggest a need for increased attention to career planning among students, their mentors, graduate schools, and funders.[1]
[1] http://science.sciencemag.org/content/352/6286/663