@George,
These collisions are an interesting thing for me though. I used to be rather weary of the worlds colliding myself, but then I found it's no big deal when they do. Indeed, I'm now having some regrets about episodes where the worlds
could have collided,
almost did, but ultimately didn't because I failed to help them along.
For example, one day an online friend from A2K and a real-life friend from high school wrote into the same thread of mine. Both ladies are the same age, work in the same profession, indeed work in almost-identical specialties within their profession, and seem to me to have very compatible temperaments. They would like each other if they met. I would have introduced them in a nanosecond if their chance encounter had happened in a physical room in real life. But this was cyberspace, so I didn't.
Why? Weariness about worlds colliding, which took a day or two to overcome -- by which time the window of opportunity had closed. Now that I look back at it, this weariness looks stupid to me.