Mechanic is quite simplistic comparing to life science to me. Every single component of the car was built by a spec made by human. We dont borrow components of nature that oporate at a scale we're not fully able to inspect, to produce code we dont fully understand, then claim that the code does exactly what we want and nothing else.
Aside from that, cars were also tested for more than 1 year you know?
I just don’t understand why would you trust a car engine all that much more vs medicine. Do not blindly trust anything, but questioning uncontroversially held beliefs by a whole field is just cocky.