Sometimes it sure doesn't work.
This is by far the best of a batch of new pots. I do like it, form, glaze, weight, feel.
But it cracked, thoroughly. No use.
Now what? I think of Edward de Bono's recommendation from years ago, to "do a PMI". It means "plus", "minus", "interesting". Mostly it means, don't toss something disappointing without learning from it. First check the plus in it: what's good; the minus: what's bad; the interesting. And, I add, why for each of those.
What's good? The above, also the size is right for handling and use. The glaze came out interestingly variable, and where do those wonderful little red speckles come from? The texture shows. I didn't realize the glaze would look so good on this clay. The iron spots actually add to the interest.
What's bad? The crack, for sure, Why did it crack, anyway? Some stress on the side where the crack starts. I pushed the clay hard into the mold to get it thin everywhere. It's not thinner where it cracked, nor thicker, not patched...but something . Is anything else bad? I sure didn't think to consider that. Well, it could be lighter in weight. Do I dare make the clay slab thinner with this much overhang?
Think I've covered interesting, but I'm also getting interested in the problem. Why did it crack? Think I'll keep the pot awhile, show it around, ask what others think of this. So far, I have no idea.
I'd rather make successful pots, of course, but mistakes in pottery count for very little. No one is hurt, and there are always more pots in clay, glaze, and hands.