I just had two interesting experiences. First, I spent a couple of hours reading a PhD thesis on a topic that had a strong tie to nonlinear dynamics and chaos. It had all the fun stuff: Poincare sections, phase space localization, etc., in the context of classical elliptical orbits with "kicks" applied as drive. While reading this, I had the realization that I had very little physical intuition for this system, even though it's in many ways an old problem. For example, the statement that, in this 1/r^2 central force problem, trajectories with large angular momentum have less orbital eccentricity did not seem obvious to me - I really had to think about it. Why do I have more intuition for nanoscale and quantum systems than classical central force problems? Because I hardly ever work on the latter. Physical intuition is the intellectual equivalent of muscle mass in some specific group. If I don't exercise the Poisson bracket/Runge-Lenz vector part of my physics brain, it atrophies.
The second experience also relates to intuition. Remember this post? PRL followed up with me last August. They said that they'd looked into my concerns about data manipulation, and that the author (not clear which one they contacted) had shown them "unprocessed" data, and that things looked ok to them. Well, I've been contacted by a colleague at another institution who read my blog post about this, figured out which paper I meant (!), and alerted me to other questionable figures in other publications. Updates as events warrant.