Not a doctor or biologist but I'm guessing that the evolution seemed so rapid was due to the perfect lab conditions and the ramping of dosage instead of just fr

Not a doctor or biologist but I'm guessing that the evolution seemed so rapid was due to the perfect lab conditions and the ramping of dosage instead of just from nothing to very strong. Also, it's giving the bacteria a safe home from which to launch their next wave of attacks, vs taking the no antibiotic zone and dropping an anti-biotic bomb on it as would be the case if you e.g. Had an infection then began a strong course of antibiotics. In the human body you'd also have other factors (immune system etc) working against the growth, so it's not just the antibiotics which would be killing off the bacteria.