I am wondering hos this dilutes over time though. I mean, if I was in a select group of 100 people, I would pick up the phone if one of them rang and wanted my

I am wondering hos this dilutes over time though. I mean, if I was in a select group of 100 people, I would pick up the phone if one of them rang and wanted my help. However, as that group grows to 1000, it would be less likely and at 10.000 I would probably not bother. But maybe there are stronger ties within the batches?