Is there such a thing as objective reality?

[True Federalist (진정한 연방 주의자)]

If reality is so loosely weaved, leave your house by the second floor window because you strongly believe you will be able to leave the house that way and then see if your assumption holds up.

From your perspective, I might be dead. From my perspective, though, the universe itself would have ceased to exist along with me. That's exactly what I mean. Does reality exist for me separately from my perception of it? Rather, it seems like it's constructed by my perception of it.

Do we exist separately from others' perceptions of us?  Rather than "Cogito ergo sum", might not "Videmus ergo sumus" be a more accurate view of reality?

[True Federalist (진정한 연방 주의자)]

And while there appears to be a physical phenomenon that produces the color red, we have no way of knowing if everyone actually perceives red the same way.  Maybe what red looks like in your brain looks like green in my brain.  We'll never know, but does it matter?  Even if we have what could be considered different subjective experiences internally, if they are stimulated by the same external stimuli and we respond externally to them identically, is there really a subjective difference?