I view 1-1.5 year jumping as more of a risk. At the level of maturity that I'm at it's actually more of a mental health concern than it is anything else. I encourage people to move fast but I also know from my own patterns that the fast moves are a sign of depression.

This guy has a biography online about what he did so screw that. Just post a link to this article if you re-enter the work force. But you'll have something to put there anyway.