Why you need an origin story and the questions you need to answer to build a good one

Hey! You there!  Yes, you – in the figure-hugging jumpsuit. Why are you hanging upside-down from that building?  Radioactive spider, you say? Tell me more…  Every superhero has an origin story – and you probably know lots of them. Whether it’s a poorly planned scientific experiment, a distinctly unethical military program, or being transformed from…