However, much to my dismay, there are certain times where ironing is necessary. Typically these situations arise when I've forgotten to hang something up or fold it in a timely manner and now need it for work. When that happens, I subscribe to the more-is-better theory of ironing. ie: the hotter the iron, the faster it gets done.
I discovered, unfortunately, that this is not always true. See exhibit A (below)

This is my work shirt. It is not supposed to be partially melted with ragged holes in it. Synthetic fibers do not like the 'linen' setting on the iron...for future reference.