Have you read my first paragraph ? Of course I agree that it's impossible to "step outside" of your phenomenological world. But through logical deductionyou understand that.One thing we definitely agree on is that it really really really seems like there is an external world out there. What I think you are missing is that it is impossible for the six sense media to prove or disprove the existence of an external world. Impossible. The idea that an external world exists (regardless of whether it exists or not) is a product of the input from the six sense media over the entirety of your life...a construal. Notice that I am not talking about the possible existence of an external world, I am talking about the idea of existence of an external world is a construal.
If that is not so, then please explain me why the phenomenon of "cold water touching my skin", why that feeling, why that phenomenon manifests ONLY SOME TIMES, NOT ALL THE TIME. There must be a cause for this. Or am I wrong and there is no cause for this ?
Trust your common sense and logical deduction. If we throw logic out the window, there is no way we will ever arrive at the truth and make sense of the world. We could chose any idea we want like "I am creating this world" or "a pizza monster is creating this world" etc. and nobody would be able to disagree with us. We could chose any wrong view we want and stick with it till we die. Yet, if one want's to achieve stream entry, he has to drop the first 2 fetter. And that can only be done through following logic till the end and not getting stuck in a jungle of views. Only logic, reason is our light that carries us through darkness at the end of the tunnel. If we don't trust logic and reason, who else can we trust ?One thing we definitely agree on is that it really really really seems like there is an external world out there.
@Binocular - good point. I already explained the brain in the vat problem in my first paragraph. There is no other way other than logical deduction to understand the external world is real. Only by asking yourself the question "why does the phenomenon of cold water touching my skin only sometimes, not all the time manifest" will a person understand, through logical deduction, that "external world" does exist. Otherwise who in the world is responsible for that cold water phenomenon appearing only some times, not all the time ?
Until a person understand this, he will continue to assume a self is behind this. That's why understanding conditionality leads to understanding no-self and removal of the first fetter. After that, only second fetter remains witch is removed through understanding stress. The third fetter of doubt is removed through removing the first two.