I would love to see a fiction story about what would happen if we had the same amount of "safety consciousness" in the past as we do today. Could we invent kni

I would love to see a fiction story about what would happen if we had the same amount of "safety consciousness" in the past as we do today. Could we invent knifes? Would nuclear reactors or atomic bombs would ever become a thing? What about cars? motorcycles? hammers? Encyclopaedias? Universities? Vaccines? Drugs?