Occam's razor is a very useful guiding principle, but it still is a philosophical principle, not a requirement for a theory to be scientific. Observation of cou

Occam's razor is a very useful guiding principle, but it still is a philosophical principle, not a requirement for a theory to be scientific. Observation of course is, and in fact string theory (potentially) is consistent with observed phenomena. Its main problem is that it is too difficult, if possible at all, to determine if it actually is, and in which form. Actually the same Sabine Hossenfelder wrote a book about that as you probably know