The concept that we KNOW reality, seems, to me, a little arrogant--like man shaking his fist in the face of God.
Maybe its like this--- an infant experiences great change during the birth process. A nice warm home where food is supplied is suddenly gone, and now there is cold, and pain, and hunger. If the unborn infant was capable of expressing thopught, he/she might say, " there is no existence outside of my mother". But after birth, and schooling, and normal growth, that same person realizes that there was much outside of mother.
As parents, we encourage our children to grow--it is unnatural to want to keep them as infants forever.
To say that reality is limited to what I can see, feel, hear etc may be coorect--or it may be a lie.

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1982 300SD " Wotan" ..On the road as of Jan 8, 2007 with Historic Tags