So say you’re eight years old and you just heated up some peas and want to put some salt on them. But the saltshaker is sitting in the dish drainer, empty. You could ask for help, given that your mother is in the next room, but you don’t. Instead you find the big container of salt. You could pour a little bit out to sprinkle on your peas, but you’re feeling helpful and decide to refill the saltshaker. When you do, the salt doesn’t shake out. (You don’t know that this is because the saltshaker was wet and salt doesn’t like that so much.) You get a pencil and poke it in the holes of the saltshaker (breaking off the lead in two place) to no avail. This inexplicable failure doesn’t stop you. The logical next step- getting some Tupperware out of the cabinet, poking some holes in the bottom of it with scissors, and filling it with salt to replace that defective saltshaker. Mission accomplished.