You rely on your sense perceptions even when you're asleep, to keep you safe and to achieve your purposes in the world external to you. You know that we have instruments to detect for us and to measure phenomena that our senses aren't good at, eg light frequencies above and below our evolved range. If you don't think a real world is out there, how is it that you had parents,that you breathe air, drink water, eat food, post on RF?No one has ever come outside of their sense perceptions to see if they, the sense perceptions, bear any semblance whatsoever, to what we sense. In fact, we know for a fact that all that exists outside our sense perceptions is a bloomin buzzin confusion.
Or are you saying that because we know enough about reality to state with some clarity the range and limitations of our senses, this entitles us to invent entities with our imagination and then assert their reality?
Yes, 100 % of the people I know, including you.Do you know of any person who has ever been "out there in reality"?
In that case you'll have no problem holding your breath for an hour. Let me know how it goes.Unfortunately there is nothing or nowhere outside the flesh and blood between the ears. That is where all reality is.