I have been watching a video on youtube about the possibility of parallel universes, and one theoretical physicist seems to think there are only a maximum of a googol^5 universes, whilst others think there are unlimited universes.

If there are unlimited universes then there are going to be copies of each of us. If they are copies of us, do you think they would share the same consciousness as us? If not, then they are obviously not ourselves.

Do we all share a common/shared consciousness, that is powered/controlled by some other entity, or do we each have private consciousness that are distinct and disjoint from one another?

I don't really buy into the infinite multiverse idea - that for every action in reality, things went a different way in another reality, and you have all different copies of you going around living a variation of lives. I think of there are other realities parallel to this one, as DMT might indicate, that they have quite little to do with this infinite multiverse idea. I feel like it's an idea that scientists embraced a while back in order to cope with certain holes in their ideas, but personally I find the idea to be quite outlandish and more science fiction than science. For those who accept the infinite (or googol^5 or whatever) multiverse theory, I don't believe they tend to think that the "copies" are aware of anything other than what they conceive to be their own personal life story. I suppose the copies could theorize with each other about the speculation of the others, but they should remain perpetually unaware of each other.

Your second question is a bit more difficult to answer, but only because I believe it requires a nuanced response. I think you have a limited private consciousness. Consciousness tends to be private, and "you" tend to be autonomous in your actions. Now, we're so used to having our thoughts be our private very own thoughts, unless we wish to make them revealed, but hyperspace entities don't seem to have that kind of a limitation. It should seem when they interact with us that they are quite aware of our every thought and emotion. While I don't think they control what you do, I do think that they may have some subtle influence on some worldly things, but I don't think of it as them using you as a puppet or something like that. When in strong direct contact with them as is the case with a DMT experience, they can quite literally override your motor system and have you perform potentially complex, involuntary movements. It's impossible to know really though how much a DMT entity can be aware of our consensual reality when we're not having a DMT experience. When we do have the experiences however, I do find that they are quite aware of our surroundings. They tend to circumnavigate real objects as opposed to going through them, and there is a direct relationship between the size of the "container" one is experiencing hyperspace in (i.e. a small bedroom, a larger living room, outside in nature, etc...) and the size of the hyperspace experience itself.

Then on a sort of different level, to address private/shared consciousness, it could be the case that we all have private consciousnesses that contribute to a higher consciousness (that is not necessarily the sum of its parts). Here's the way I'd like to think about it. You have all of these trillions of cells in the body. Let's imagine, just for this analogy that each cell has its own form of primitive consciousness, such that each cell thinks its going about its day doing its own thing, going through its personal metabolic processes. Sure maybe they don't think about what they did at the store or school or work, but perhaps think "do you have any proteins for me?" I'm being a little silly of course, but if we follow this analogy through, we have all of these individuated cells that collectively create a human (or other multiceullar organism) that has its own unique and advanced thought processes. We're not just the sum of our parts though. We're not just a bag of metabolic processes. We also remain perpetually unaware of the individual activities of any one cell in the body. Similarly even though we tend to think we're going about our days, doing our own unique things, that all of our actions, thought processes and emotions could all potentially add up to the mind of a super-organism (God maybe) whose experience is completely unique and advanced relative to our experience.

I would agree with you that the multiverse theory does seem to be a bit outlandish, but I still think there is some intrinsic value in it when it comes to understanding the fullest potential of all expressible expressions of one individual, in other words if you think of the infinite multiverse idea as applicable to you, the individual, it basically suggests that you have unlimited potentials of expression, and in every universe every expression is fulfilled.

So, to bring that back to this life, within the physical limitations and the realistic limits of this life, you still have quite an infinite number of possible expressions, and I think through personal living, and conscious action, we in a way create the fullest expression of our own potential (of course, limited to the realistic constraints of THIS reality and the home we call Earth)

Still, quite incredible when considered in this perspective; ultimately an infinite "multiverse" expressed as unlimited potential as a singularity in each and every one of us, and then that which is "real" is that which we choose to live out in our own lives;

For example, I just woke up, I can choose to have coffee, or tea, or I can not drink either and have oJ instead, or I can go out for breakfast, or... and the options are fairly abundant... the fulfillment of each one exists as a potential possibility within this reality, but which one actually gets fulfilled, as in which option I actually decide to explore, is entirely up to me Extrapolate that to the rest of the realistic expressions of life