Science of Motivation

I've worked for several companies where the idea of personal development time was put on the table. In all cases 'the business' disagreed with the idea with the usual fear of loss of productivity and therefore missed deadlines. This fear extends to agile software development, especially as software gets closer to a big release date; it's the developers that put in 80+ hour a weeks that are the ones that get the pat on the back from 'the business', rather than the developers that deliver high quality and robust software. Now I sound a little bitter here, and perhaps I am, but I come from a science background and I like to question beliefs and do things because of evidence not for historical reasons. A great many companies have a provincial attitude that is stranded in old fashion dogma, perhaps with videos like this time are a changin.