10 ms·

But then they would move in the same general direction every day, if it was that easy it would have already been solved.

• prvc 3y ago
  No, just over time.
  • deleted 3y ago
    [deleted]
  • Jensson 3y ago
    They tracked the balls for two months, if it was easy to see that they always move X direction during a sunny day they would know. That is likely the first thing they checked, we know that plants can turn to face the sun.
    • prvc 3y ago
      Because the terrain is never perfectly uniform, the pattern might not be evident within a small period of time, like one day.