then shave with it. through out the 20th century, disposable blades and safety razors could be found in most men s medicine cabinets. from here went to a safety razor. very simple. twist it open. insert a double-sided razor. close it. bic made a popular brand that was completely disposable and a razor race was on. a man will shave about 20,000 time on average in his lifetime. so there is definitely room there to be studying and make it better still and millions go into trying to achieve what is called a perfect shave. ultimately more blades means changing the weight and balance. that means using technology to make the blades thinner. it made us decide to turn back the clock for a bit of research. can i make one request for us. i like my ears where they are. i m not sure who was more nervous. me or boris.