What’s something you used to believe as a kid that seems ridiculous now?

When I was a kid, teachers always had one line they loved to throw at us whenever we complained about math.

“You need to learn this because you won’t always have a calculator with you.”

That turned out to be complete bullshit.

Every single day I walk out the door with a cellphone in my pocket. You know what’s on it? A calculator. Not one of those cheap solar-powered things that barely worked after you spilled Mountain Dew on it. A calculator that’s faster, smarter, and more powerful than anything my math teacher had sitting on her desk in 1992.

Need to figure out percentages? Done.

Need to calculate mileage? Done.

Need to split a restaurant bill? Done.

Need to know how many days until retirement? It’ll happily crush your spirit with mathematical precision.

The funny thing is, the lesson wasn’t really about calculators. It was about memorizing things because that’s how school worked. Memorize formulas. Memorize dates. Memorize steps. Then forget half of it the week after the test.

The real skill isn’t doing long division by hand. It’s knowing how to solve problems and knowing when to use the tools you’ve got.

Humans have always built tools to make life easier. We don’t churn our own butter anymore, we don’t ride horses to work, and I don’t need to do algebra in my head while standing in the grocery store trying to figure out if the family-size box of cereal is actually a better deal.

Technology didn’t make us lazy. It made us more efficient.

So every time I open the calculator app on my phone, I think back to hearing, “You’ll never have a calculator with you all the time.”

Turns out I do.

And it’s a damn good one.