Caleb has that thing that many east African athletes used to have. No preconceived beliefs limiting his idea of the possible.
Komen had it. Geb had it, sort of still does. Kip Keino certainly had it.
Back in Keino's day, western runners filled themselves with numbers, ideas of clock and time. Keino simply figured out the patterns of races, and ran fast where everyone else slowed down. Worked pretty good. Sure, he learned western ideas and techniques, and used them, but he was an original out-of -the-box thinker.
Mo Farah, if he is still able to train, compete and kick at the highest level, will have his hands full with Caleb in the next couple years. I look forward to it.
Let's say Mo hits the front with 5-600 to go in the 5000 in the worlds, looking to control it. What does he do if Caleb goes by with 300 to go? Or if Caleb is leading and won't let Mo go by with 500 to go? LET ALONE the pack or Ethiopian studs and/or Rupp on their heels?