Wonderful! A single thread for Clumping Theory. Thanks for bringing it to the fore dear Richard.
I want to write a bit about 'Signal strength':
Whatever the bet, there will typically be a part on the wheel where it will succeed more. i.e. if you are using "neighbors" as a bet, there will be a side where the
"neighbor hit" event is striking in a greater frequency, it is there where the "signal" is more powerful, where it has more strength; therefore you use it to
narrow the area of clumping for such event, helping you when pondering where to focus your attack.
This easily seen in practice when being in front of a disc. Look at the following areas with 3 realized neighbors each:

Zone
27 to
24 has
3 realized neighbors (in blue)
Zone
12 to
4 has
3 realized neighbors too (in red)
We say the signal is stronger in zone
12 to
4 because the events are being realized with a better clumping. The realization of an even in larger areas "dilutes" the signal, the same realization in shorter areas makes it stronger. We back up where it's stronger.
Number
0 would bring '
4 realized neighbors' within an
area of 9.
Number
17 would bring '
4 realized neighbors' within an
area of 13.
...hence number
0 would be given more weight when considering neighbor bets over number
17.