Lesson 3: The Switch: Open, Act, Close

Seeing What’s Open

You’ve built the door and crossed the bridge.Now you’ll learn what happens after a transaction — the invisible moments that keep ownership intact.Every interaction with the chain opens a small window; this lesson teaches you to see it, close it, and leave the room clean.What begins as a technical step becomes posture: awareness that never drifts.

Let the System Speak

At the top, she draws a small switch — a simple line with two dots.
“This,” she says, “is what connects your wallet to the world. Every time you interact with a site or a smart contract, you flip one of these. It’s called an approval — permission for that site to move a specific token on your behalf.”

“You’ll see it when your wallet pops up and asks to connect,” she continues. “That’s the switch being offered. You decide whether it flips.”

She glances up, reading your face.
“Approvals aren’t bad,” she says. “They’re how things get done. But every open window is a draft — and every draft is a risk if you forget it’s open.”

Her pencil rests against the page.
“That’s why every clean trade ends with a check. If something can still move your tokens, it means the window’s still open.”

Connecting to the System

You tilt your screen slightly. She gestures for you to follow along.
“Here’s the good part,” she says. “You can see your windows — and you can close them.”

She opens a new browser tab: revoke.cash — the interface plain, almost boring.
“This is a revoke tool,” she explains. “It scans your wallet for every permission you’ve granted — all the doors you’ve left ajar.”

“Open revoke.cash,” she says softly. “Connect the same wallet you used for the swap — Rabby, MetaMask, or Trust. Wait until your address appears in the top corner.”

Rows appear: token names, amounts, dates, and checkboxes marked Approved.
Ava points to one line.
“See that?” she says. “This contract still has access to your wallet — even though the swap’s done. Let’s close it.”

Closing What You Don’t Need

“Click Revoke beside that token,” she says. “Your wallet will ask to confirm a small transaction — just gas fees. Approve once.”

You click Revoke. A pop-up appears. You confirm.
Seconds later, the line disappears.

Ava nods.
“That’s it. The window closes. The draft stops. You just told the system, thanks — we’re done here.”

She waits for the list to refresh.
“Do the same for any contracts you don’t recognize,” she says. “Leave only the ones you use often. The rest can sleep.”

She leans back, folding her hands.
“That’s what power looks like in this space — not trading faster or guessing harder. Just knowing what’s open, what’s closed, and when to breathe.”

The Quiet That Follows

You glance at your screen — the explorer still open on one tab, the revoke page now empty.
For the first time, it feels quiet.

Ava caps her pencil and stands.
“Move small. Watch close. Leave clean.”

She looks at the two open tabs.
“Explorer shows the proof,” she says. “Revoke keeps it tidy. That’s the full rhythm — act, verify, close.”

She smiles — not approval, but recognition.
“The system is big,” she says, “but it listens.

From Door to Motion

The notebook closes with a soft click.
The seed is written. The door is built. The light in the room settles into something steady — less discovery, more design.

Ava doesn’t say congratulations. She just studies you for a moment, then slides the pencil back into place.
“What comes next,” she says, “isn’t theory. It’s proof.”

She gestures toward the quiet screen.
“Yesterday you learned what control means. Today, you’ll see what it looks like when it moves.”

Outside, the hum of the system continues — blocks being written, confirmations stacking, strangers trading value they can’t see.
Inside, only one thing matters now: whether your door opens clean.

Ava writes three words on a yellow note and leaves it beside your keyboard:
Swap. Mirror. Revoke.

“Every path,” she says softly, “has a rhythm. This is yours.”

The room falls quiet again — not like an ending, but like the breath before motion.

Your First Loop: Swap, Mirror, Revoke

Ava closes the notebook and rests her hand on the cover.
“You’ve learned to open and close the system’s windows,” she says. “Next, we’ll make them move — on purpose.”
Her eyes stay calm, almost curious.
“One small swap, one mirror, one revoke. Not theory this time — proof.”
She nods toward the quiet screen.
“The door’s ready. Let’s see if it opens clean.”