1 space or 2 spaces after a period poll was surprisingly interesting. Then, do you put comma before 'and' or not? Example #1> I bought bread, milk, and eggs. Example #2> I bought bread, milk and eggs. I was told to do #1 in high school. But, my college English professor (actually a very hot TA) said both are okay. She said she does #1 because that's how she was taught, but #2 is okay as well.