If algorithms are good at one thing, it is making curiosity feel effortless.
Every time you pause on a post, watch a video twice, like a photo or leave a comment, the platform learns something about you.
It then ranks the available content according to how likely you are to engage with it again.
That is why your feed becomes increasingly familiar: more of what interests you, delivered faster and with greater precision.
But there is a crucial difference between content that keeps you engaged and content that actually educates you.
Algorithms cannot measure whether a post has deepened your understanding.
They can only measure how you responded to it. Likes, shares, comments and viewing time become signals of value, even when the content itself offers little beyond entertainment.
Imagine you are learning the piano.
The algorithm could recommend an advanced lesson on harmony or a short video titled “Three easy piano tricks to impress your crush.”
One is more educational. The other is more clickable.
Most people will choose the second.
That is why social media often creates the sensation of learning without demanding the work that real learning requires.
A feed can introduce you to ideas, terms and subjects, but mastery rarely comes from material designed to be consumed in seconds.
Psychologist Robert Bjork used the phrase “desirable difficulties” to describe the effortful conditions that strengthen long-term learning.
Genuine growth often feels slow, uncomfortable and demanding.
Social media usually offers the opposite: instant clarity, quick reward and no requirement to struggle.
Still, algorithms are remarkably effective at sparking new interests.
Because they cannot predict exactly what will capture your attention at a particular moment, platforms constantly vary the subjects, creators and formats appearing on your feed.
One day, you may know almost nothing about astronomy.
Then a post about “diamond rain” on Jupiter appears, and suddenly the solar system becomes fascinating.
But the purpose of this variety is not necessarily to enrich you. It is to keep you watching.
The algorithm may move you across music, psychology, neuroscience, history and countless other subjects.
What it rarely does is move you upward through increasing levels of difficulty.
You may explore many hills without ever climbing a mountain.
Even when you repeatedly engage with the same subject, the content served to you often remains simple, attractive and easy to digest.
Our instincts naturally pull us towards what feels effortless, and algorithms are designed to reinforce that preference rather than challenge it.
This becomes a problem because attention is limited.
The more of it spent scrolling, the less remains for reading, practice, reflection and sustained concentration -- the activities required for real improvement.
Social media can open a door. It can introduce a subject, trigger curiosity and help people discover passions they did not know they had.
But it cannot do the difficult work on their behalf.
The next time TikTok, Instagram or Pinterest sparks a new interest, resist the urge to keep scrolling indefinitely.
Read the books. Practise the skill. Study beyond the headline.
Your feed can introduce you to a subject.
Only effort can teach it to you.