On File Formats, Very Briefly themanual.org

Paul Ford, in the Manual:

You can take apart these formats and find out which decisions were made to create them. You’ll find that within them each carries the weight of its own past. Whether it’s Photoshop reacting to the enormous power of computers by doing ever more things with images, ever more channel ops and blends, or HTML opening up to accept every kind of data, serving not as a way to present documents but as a sort of glue.