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Tee That Says "There Are 2 Hard Problems in Computer…"
Born from the search "tee that says "there are 2 hard problems in computer science: cache invalidation, naming things, and off-by-1 errors" on royal blue" — printed fresh for whoever wants it next. Never stocked, never repeated.
$26.99- Midweight 4.2 oz combed ring-spun cotton
- Soft hand-feel, holds shape
- Unisex classic fit
- Crew neck, shoulder taping
- Runs true to size
- Size down for a slim fit
- DTG one-of-one print, made only for this order
- Wash cold inside-out, hang dry
- Do not iron directly over the print
- Printed only for you — that's why every sale is final. Arrived flawed? We replace it within 48 hours, free. Full policy
Every tee here starts as an idea. This one started with "tee that says "there are 2 hard problems in computer science: cache invalidation, naming things, and off-by-1 errors" on royal blue". Printed on premium fabric and at your door within the week.
loom № a22dd8d3
edition 1 of 1
born July 9, 2026
from “tee that says "there are 2 hard problems in computer science: cache invalidation, naming things, and off-by-1 errors" on royal blue”
summoner royalties · coming soon
Frequently asked
Is this really one of one?
Yes — printed only for this order, then it's gone. That's why every sale is final. If yours arrives flawed, tell us within 48 hours of delivery with a photo and we'll remake it or refund you, our choice, at no cost.
How fast does it ship?
Every piece is made to order — printed and shipped in 3–7 days, free worldwide. Nothing is pre-stocked.
What size should I order?
Check the size guide on this page for exact chest/length measurements. Sizing is measured flat, unisex relaxed fit — size down for a closer fit.
Can I return or exchange it?
Since it's made only for this order, all sales are final and there are no exchanges. The one exception: a flawed print reported within 48 hours of delivery, which we remake or refund at no cost.