Note the way I phrased how we retrieve information about particles. There's no magic here; concepts like "consciousness" or "free will" play no part in this process as it is explained.
An "observation" is probably best understood as "the particles that make you are interacting with particles that transitively interact with the particle you're attempting to measure, entangling all of you in the process". The resulting system defines all versions of your possibly observed realities including every possible measurement result.