> why anyone would question the value of it. I once heard an account, the gist of which was, the man who first wrote the [authoritative] book on play behavior

> why anyone would question the value of it. I once heard an account, the gist of which was, the man who first wrote the [authoritative] book on play behavior in different animals was unable to get tenure. This was in the context of noting that play in general had been undervalued as a subject.