Observation requires consciousness, and people make the observation. The greatest paradox of science says that how can you qualify something you have not seen. the example goes to a cat in a box, we do not know whether it is dead or alive, So physicist says that the cat is both until they open the box and find for sure what happens with it. The same happens to electrons they can speed up or down and be at both places at the same time. Einstein thought this was stupid, but he was wrong this can really happen.
“Michio Kaku (/ˈmiːtʃioʊ ˈkɑːkuː/; born January 24, 1947) is an American theoretical physicist, futurist, and popularizer of science. He is a professor of theoretical physics at the City College of New York and CUNY Graduate Center. Kaku has written several books about physics and related topics, has made frequent appearances on radio, television, and film, and writes online blogs and articles. He has written three New York Times best sellers: Physics of the Impossible (2008), Physics of the Future (2011), and The Future of the Mind(2014). Kaku has hosted several TV specials for the BBC, the Discovery Channel, the History Channel, and the Science Channel.” Source: https://en.wikipedia.org/wiki/Michio_Kaku