Q about QM spookiness

[Mudhammam]

Only "those particles". Ultimately, QM doesn't appear to apply beyond a certain point - or, more accurately, it's influence (whatever that may be) is dimished with scale.

If I understand you correctly (and it's a common idea, floating around the periphery of QM) you're wondering if QM could be applied to something like the things that "make up" you and I? Whether or not some QM spookiness applies on a "bigger level"?

(I'm being very very loose with language here)

Yeah, basically.

A third Q. Is it possible that wave collapse occurs with measurement by the brain and would that somehow imply that each FIRST conscious or unconscious 'observation,' by whatever mechanics in the brain that effect wave collapse, is responsible, in a sense, for 'creating' the object that other brains then apprehend, INCLUDING the brain?

Also, when it comes to physics, all the language sounds loose to me.