The meaning of life speculation
To reply to you it will seem like I’m going to go very far off topic but it’s necessary:
Think of life at the very beginning as a person standing/ walking around a pitch black room. Each time this person thinks the room changes colour. Once one thought ends the colour changes to pitch black until another thought begins and then the room will change colour again. Once one thought cycle is complete (let’s call this the time it takes from the beginning of one thought to the end of it) the room becomes pitch black as it gives form to nothing. In this state, the previous thought no longer exists (even if it can be recalled and it occurred as a result of a prior event) it is a moment that can never occur again (at least in our illusion). No matter how much you think: the room will react by changing at that instant of your thought. The meaning of life cannot be the meaning of life if you can think it up because thinking gives rise to phenomena (in our case a newly coloured room) which may not exist in the moment as our perceptions may be flawed( some are colour blind and we may all be on a spectrum of colour blindness). So once we open ourselves up to the possibility that our perceptions are flawed as we have biases etc etc then the final thing to do is to try to give permanent rise to a pitch black room. In this absolute darkness where there is no concepts and no thinking (perhaps no you either!), can we ever hope to gain any true insight into the nature of the universe. Through the experience of the impossible to experience as there is no one to experience it can one hope to ‘grasp’ reality or nature.
I may block my awareness as you say, as I don’t see how the colour that appears in the room actually has any value. Our awareness is limited to our senses and our senses may not show us what is actual. My thinking is limited as thinking is limiting. Thinking can only operate within time and space and so the illusion that we think from one moment to the next is real and exists but doesn’t give much value to thinking. To answer your question (How they exist?) is a question that we can only intuitively know the answer to as our thinking may not reflect reality, it has to be more of a feeling but even that doesn’t do it much justice as feeling is the illusion of phenomena effecting the senses. You can intuitively know something if you experience it in nothingness where you don’t exist and then come back to thinking with the truth. Which goes back to the gap between thoughts.
Visions and senses cloud the path (or room), only one thing is absolute. This thing is nothing. Maybe in nothing we learn the ultimate truth, although who is really going to be the learner at this point? What is the learned if it’s experienced outside of time/space?