So I've been thinking about this for a long time. I understand that HUP means that every attempt to measure quantum particles alters them. For example, if you want to 'look' at a particle by hitting it with a light photon, you alter its trajectory, speed, and position by an unknown amount, and we can't measure the changes because that would require another measurement which changes it by an unknown amount, ad infinitum. Question 1: can a single quantum particle be isolated completely for observation? Question 2: what would happen if you bombarded the particle with two equal energy photons simultaneously to cancel the change out? If my understanding is off feel free to correct me.