Kageyama wrote that, in his experience, a player faces four barriers at: 12-13k, 8-9k, 4-5k, and 1-2k.
The ‘barrier’ levels seem to imprefectly relate to the Fibonacci sequence: 1, 1, 2, 3, 5, 8, 13.
What do you all think? (an idle weekend thought
Cheers
tezza

