But when we attempt them we should discard the assumption that people and therefore labor behaves like a fluid. In scales of hundreds of years it does but in sc

But when we attempt them we should discard the assumption that people and therefore labor behaves like a fluid. In scales of hundreds of years it does but in scales of decades it behaves like Legos or the ice stuck at the bottom of your glass. All kinds of motivations affect people's stickiness to a place, a lifestyle or a career. It's hard to know what will dislodges them or how far you can tip the glass before they all rush forward at the same time and smack you in the face.