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Why we built an evidence-linked way to decide what to post

· 2 min read · Product, Building in public

Most "what should I post" tools give you a confident sentence and no way to
check it. You get a topic, a hook, sometimes a whole draft — and no answer to
the only question that matters: why this?

That gap is the reason we built JustPost the way we did.

The problem with confident advice

If a tool tells you "founders are talking about pricing this week," you have two
options. Believe it, or go and read a hundred posts yourself to check. If you
believe it and it's wrong, you've spent your one good post of the day on a
trend that didn't exist.

The failure is quiet, too. A fabricated trend reads exactly like a real one.
There's no error message, no obvious tell — just a recommendation that happens
to be made up.

What we do instead

Every recommendation JustPost makes carries the posts it came from. Not a summary of
them — links to the actual posts, with their real engagement numbers, so you can
click through and decide for yourself whether the signal is real.

That constraint shapes the whole product:

An example of getting this wrong

Early on, our recommendation engine grouped posts by grammar rather than by
subject. It found six founders who had all used the word "should" and reported:
"6 founders independently made this point."

They hadn't. They'd used the same verb about six unrelated things. The sentence
was well-formed, plausible, and false — the exact failure mode the product
exists to avoid, shipped by us.

The fix wasn't cosmetic. Now a group like that says what's actually true:
these founders posted prescriptive advice, they aren't necessarily agreeing, and
here's a real quote so you can judge it yourself.

Why this matters for growing on X

Posting consistently isn't the hard part. Posting something worth reading, on a
day when people are actually thinking about it, is the hard part — and you can't
get there on advice you're not allowed to check.

Evidence you can click is slower to produce than a confident guess. It's also
the only kind worth acting on.

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