Why packing by category beats packing by memory
Trying to recall everything you need from memory tends to miss items that are only needed occasionally, like an adapter plug or a specific medication. Working through fixed categories -- documents, electronics, clothing, toiletries, carry-on -- one at a time catches gaps that a single mental pass misses, which is why checklists outperform intuition for packing.
The carry-on test
A useful planning question is: "if my checked bag never arrives, can I function for 24-48 hours with just my carry-on?" Anything the answer depends on -- medication, a full change of clothes, chargers, essential documents -- belongs in the carry-on regardless of how the rest of the packing is organized.
Frequently Asked Questions
How much should I pack for a week-long trip?
Most experienced travelers pack for about half the trip length and plan to do laundry or rewear items, since climate-appropriate clothing in a small set of matching colors covers far more days than packing one outfit per day.
What is the biggest packing mistake people make?
Packing something they will need immediately or urgently -- medication, a charger, a change of clothes -- into checked luggage rather than a carry-on, which becomes a serious problem if that bag is delayed or lost.