Plain text in engineering fields is incredibly important. Engineers are usually very highly educated people and use a lot of very complex terms and ideas to explain themselves. Because of this, when talking to people who may not understand such complex ideas, they can easily cause confusion and a lack of understanding. It is very important that engineers be able to express themselves and their ideas in a simple enough way that anyone can understand them. Because of this, plain text is greatly needed in engineering fields to help put things and ideas in simpler terms for others to understand.