Some charts, based on actual research, documenting how much is spent on informal learning. The 80 percent of learning accomplished by informal learning is accompanied, according to this research, by almost 80 percent of the spending, leading Donald Clark to say "we discover that rather than being this highly efficient learning machine, it is probably just about as efficient as formal learning" and "rather than being this highly efficient learning machine that we can ignore, it may require just as much of our attention as the formal side of learning." But one wonders what the constitutes the reported spend on informal learning. I get the impression they are including everything up to and including the water cooler around which people gather. And I wonder how well the spend on informal learning would fare if analyzed for value. Was it really an investment in learning, or was it just filed under that for lack of a better category?