I’ve taught two kids under the age of ten formal logic, using the Lewis Carroll text I mentioned above. The first one was a girlfriend’s daughter, around eight or nine years old. She was exceptionally bright – but only because she’d never been condescended to in her entire life. The second one was a friend’s son, whose intelligence was remarkable only by virtue of its sheer average-ness, who was attending a Scientology school and having his head filled with a bunch of nonsense.
Carroll’s teaching method starts out using tiddly-wink like markers on a simple boolean grid, then introduces an isomorphic notation to replace the “game pieces.” It relies heavily on very amusing examples of syllogisms to keep it interesting.
Neither of the children I taught had any difficulty picking it up – in fact, I think it’s safe to say that it was easier for them than it was for me at the age of twenty. Children at that age can learn very complex things with astonishing ease – it’s how we develop naturally. The same developmental stages that make language acquisition a snap for wee ones and a difficult labour for adults apply to critical thinking.
If these skills are ignored early in life, it’s likely that the person will never be able to manage critical thought with anything like natural ease.
The position that children are naturally unable to apply reason is contrary to the experience of anyone who operates from the position that they are perfectly capable of it, and it’s baffling.
As a thought experiment, Lib, imagine a society in which the received wisdom is that children below the age of maturity are incapable of lifting. As a consequence of this, they are never given anything to lift – no toys heavier than nerf toys, no book-bags, nothing. In fact, whenever they make the natural attempt to lift something, their parents discourage them. “You’re not old enough to lift anything. If you want something up off the ground, that’s what I’m here for.”
In such a society, there will be a demonstrable lack of upper body strength in young people. Of course they can’t swing a bat – they’re children. What, you’re letting that seven-year-old to help bring in the groceries? That’s tantamount to child abuse!
Of course, our hypothetical society is going to populated weak adults, too. By the time they’re allowed start exercising their atrophied muscles, they’re pitifully stunted creatures, and golly, lifting is hard. Such a population would be trivially easy to control.