The Boundary Is Not Where You Think It Is

A student raises the honest objection that the teaching sounds like an unproven hypothesis, and the teacher encourages direct investigation.

I really appreciate you saying that, because it's better to look at it from that perspective, where it is a hypothesis for you. The experiment to prove or disprove it is right here, right now: keep looking.

Investigation as experiment

This is something you can take time to sit with. Meditate, contemplate, inquire, explore the reality of your experience. What you're looking for is this: is there actually a boundary in the sensation, or is the boundary only real in the image that is overlaid on the sensation?

The boundary is real. It does exist. But it's not where we think it is. It's not in the actual sensation. The boundary exists in the conceptual mind space.