The Most Dangerous Metaphor in Education!

There comes a moment in every parent’s life when the “why” questions finally wear them down. A toddler asks why the sun disappears, why dogs eat so fast, why people go to work, why we can’t simply live inside a storybook. At first, we answer playfully, even proudly. But the questions keep coming—insistent, layered, existential. And eventually, our explanations collapse under their weight. We reach for the one phrase that halts inquiry: “Because I said so.” I’ve often wondered whether this is the first time a child learns that the world’s mysteries have limits—and that the adult impulse for control can eclipse their instinct for understanding

As William James once called it, there is something "ferocious" about the power of a child’s attention.

A child’s mind working away, trying to get their head around the world, in their own way. It was only later that I began to see how much this seemingly ordinary experience challenged one of the most entrenched and deadly metaphors in education: that children are sponges. (The metaphor is clearly false although many like to say the simile (“children are like sponges”) is obviously true—because all similes are true. But, I digress.

Coming across as harmless, even sweet, this metaphor is not neutral.

It can completely distort what we see, what we value, and what we ignore. To test, and to probe the world, when we consider the way we learn we are essentially ignoring the drive that is at the heart of childhood, the irrepressible need to know. Coming from the adult perspective, we have got a tendency to see the learner as a blank slate, someone who is waiting to be filled up with knowledge, and that is far from the truth.

Well-known to anyone who has spent time with children is that they are not just sitting around waiting to be spoon-fed. They are deciphering, testing, and fine-tuning the world around them. They are the ones who investigate the edges of things, who worry over the limits of explanations, and who won't settle for anything less than a full understanding, and it’s because of all this that their learning isn’t just a case of passive reception, but rather active, iterative, and intensely human.

However, the sponge metaphor sticks. We find it reassuring to think that teaching is a matter of pouring knowledge into empty vessels, and that silence is basically synonymous with comprehension, so we mistake conformity for engagement. And by doing so, we create schools that highly value silent absorption and frown upon boisterous questions. Teachers who are trained to "deliver" content are less likely to see the value in a child's unruly question, which is a signpost to authentic learning.