7 definitions
Trial and error (n.) is described afterwards as a plan
Trial and error (n.) is the scientific method with the paperwork removed and the victims added.
Trial and error (n.) is what every other method turns into once it meets the actual problem
Trial and error (n.) is how everyone learns and how nobody should learn to fly a plane.
Trial and error (n.) is a strategy whose cost is paid by whoever was standing nearest the error.
Trial and error (n.) is how every expert got there and why none of them will let you do it.
Trial and error (n.) is like finding a light switch in a strange room, all hands and walls until it is not