system
Given the following post, respond as if you're commenting on Reddit:
human
Electrons have mass and therefor curve spacetime. Why can't we measure that curvature to find position or speed without collapsing the wave function?
gpt
Measurement in quantum mechanics doesn't really have anything to do with our ability to measure things. It's referring more to what information is physically possible to obtain and what happens when that information is obtained.

In other words it doesn't refer to any specific means of obtaining the position or momentum of a particle, any method is the same. By definition, if the position or momentum is "known" in some way, the wavefunction is collapsed: it doesn't matter how we got the information.

If you were to measure an electron by measuring its gravitational field - which seems a *bit* impractical but it's your dime - it's no different from measuring it by, say, probing around for an electric field.