In knitting you can make a gauge to test a pattern, play with colors, and see how many stitches you'll get to the inch. Once you start the project itself, you're committed - you may increase or decrease or add a gusset or decide that it's a sweater for someone completely different or perhaps it's going to become a hat and not a sweater after all - but rarely do you rip the whole thing out and start again.
I'd like to treat this web log like knitting. A place to play, to try things out, to gather some thoughts as I go along.