Philosophy - Alter dimensions?!?!??!

What you are talking about is physics, not philosophy. If you are interested in dimensions you should read up on quantum physics, it's really hard, but very interesting as well.

I had a discussion on this and it was much earlier in my time here on mylot. I do think there could be alternate dimensions. Some theories indicate that for every choice made there could be alternate choices that can occur and do occur only we never see them since we never made those choices. They still exist in said parallel universes. There can indeed be trillions, maybe quadrillions or sextillions of these dimensions if you factor every human on earth and all the decisions they made, plus their different possibilities. Its a lot of multiplication and it adds up fast. And some parallel dimensions could be very similar to our own, not just the fantasy/science fiction of always "very" different or "mirror". There could be a dimension where I'm blonde, another dimension where you chose the name Sorrowdark, a third dimension where we are talking about the existence of the self instead of parallel universes. Also, some time travel theories use parallel dimensions to solve the connundrums/limitations of time travel (at least travel to the past, and I wrote about that as a response to another discussion). Of course some of the same theories claim travel is also possible in terms of future travel. But with the wormhole theory its noted that changing the past would be impossible since events are taking place in a parallel dimension (supposedly).