I don't believe there is such a thing as "useless knowledge". Such knowledge is often deemed useful in retrospect. A good example is the years of "useless" mi

I don't believe there is such a thing as "useless knowledge". Such knowledge is often deemed useful in retrospect. A good example is the years of "useless" microbial ecological research resulting in the discovery of extremophiles, a discovery that revolutionized biotechnology and made PCR possible. According to Brock, his initial research was considered useless by his peers (who deemed it "exotic", a euphemism of sorts for useless).