Arthur Bloch is an American author and public speaker, best known for his humorous books on Murphy's Law. His first book, 'Murphy's Law and Other Reasons Why Things Go Wrong!', was published in 1977 and became an international bestseller. The success of this book led to a series of sequels that compiled various corollaries, laws, and observations about the perversity of the universe. Through his work, Bloch has popularized the adage that 'Anything that can go wrong, will go wrong,' making it a staple of popular culture.