Yes but maybe you just woke up from one dream to another. Happens all the time.
i know i exist or i wouldnt be witnessing my existence. You also say alot without saying anything of substance it seems. There is no evidence this is a dream as we experience dreams and can view people in this state, all avalible evidence points to this being reality with consequences and we can manipulate dream states. Remove your pineal gland and see how much you dream.
you could continue being elusive but if you want to be obtuse and ring around the fringes of what is absolute etc... be my guest.
richard fenyman knows what it is like to KNOW something, intensive study and evidence is all that is required. Beleiving in nonprovable concepts is departing from reality, come join us.