This is a question on the nature of Reality, or rather Actuality. I say Actuality, because I like the distinction that Kant makes between Appearances he calls Phenomena, and things in themselves he calls Noumena. Anyway he ends up saying we can never know the thing in itself, i.e. actuality, but only our experience of reality, i.e. appearances.
What I would like to clear up is if there is a way to experience the thing in itself, or whether we have to accept on good faith that actuality exists independently of us, and that it stops with I think therefore I am.
In short is there an answer to the sceptics? My question has been fueled by the book, _A Beginner's Guide to Reality_, by Jim Baggott, which ends in "it depends on what you believe", which doesn't really do it for me.