Straight razor King C. Gillette: a double-edged safety razor with replaceable blades. These new safety razors did not require any serious tutelage to use. The blades were extremely hard to sharpen, and were meant to be thrown away after one use, and rusted quickly if not discarded. They also required a smaller initial investment, although they cost more over time. Despite its long-term advantages, the straight razor lost significant market share. As shaving became less intimidating and men began to shave themselves more, the demand for barbers providing straight razor shaves decreased. Since 2012, production of straight razors has increased multifold. Straight
Hanlon's razor a book compilation of various jokes related to Murphy's law published in Arthur Bloch's "Murphy's Law Book Two: More Reasons Why Things Go Wrong!" (1980). Subsequently, in 2002, the "Jargon File" entry noted the same. Hanlon's razor Hanlon's razor is an aphorism expressed in various ways, including: An eponymous law, probably named after a Robert J. Hanlon, it is a philosophical razor which suggests a way of eliminating unlikely explanations for human behavior. Inspired by Occam's razor, the aphorism was popularized in this form and under this name by the "Jargon File", a glossary of computer programmer slang. In 1990,