(September 20, 2015 at 7:56 am)Rhythm Wrote: The bridge isn't "only there because you observe it" - you've made the most common and ridiculous mistake on the periphery of QM. The way you take the word "observe" to mean, in your everyday life, -is not- what is meant by observation in QM. The bridge is there -regardless- of whether or not you observe it.
Something is there. But not the bridge AS you perceive it.
The bridge as you perceive it is a collection of supervenient properties which we filter and perceive as ideas, I'd say. But what is really, really there? Nothin', so far as we can tell, except some math. And if ANYTHING counts as an idea and not a physical thing, I'd argue numbers fit the bill.