10/10/2026
𝐌𝐞𝐝𝐢𝐚 𝐛𝐮𝐲𝐢𝐧𝐠 𝐥𝐞𝐬𝐬𝐨𝐧 𝐨𝐟 𝐭𝐡𝐞 𝐰𝐞𝐞𝐤: If you changed your geo, your creative, and your bid all on the same day, then today’s numbers can’t tell you anything.
When three variables move together, the result becomes unreadable.
- Did the new creative lift it?
- Did the new geo tank it?
- Did the bid change just shift delivery to a different audience?
You’ll never know, which means you can’t reuse any of it on your next campaign.
Experienced media buyers work differently.
They change one variable, then wait long enough for the data to actually mean something before touching anything else.
It feels painfully slow when you’re used to moving fast, but it’s the only way a test produces a lesson you can carry forward instead of a guess you have to repeat.
If you’ve ever refreshed your dashboard after a multi-change day and had no idea what caused the shift, you already know this one hurts.
Which variable do you find hardest to leave alone?
Tell me in the comments.