Robert C. Martin > Quotes > Quote > Cristian liked it

“When you cannot concentrate and focus sufficiently, the code you write will be wrong. It will have bugs. It will have the wrong structure. It will be opaque and convoluted. It will not solve the customers’ real problems. In short, it will have to be reworked or redone. Working while distracted creates waste.”
― Robert C. Martin, Clean Coder, The: A Code of Conduct for Professional Programmers