It says "doesn't look so linear now / it did. On the training data"
Why it is funny: it illustrates the everlasting gap between prediction errors made on the data used to build a model (obviously small, 'cause you have the cheats) and future errors when some unseen data comes up, possibly telling you that your model is wrong. One always gets "disappointed" when putting his model in production IRL. Argh.
This T-shirt is made with 100% coton, ringspun technology. It has an exceptionnaly high thickness, making it both robust and pleasant to wear. The design is manually head-transfered to the fabric via the flex technology. This T-shirt can be washed inside-out at 40°C. No tumble dryer. If you damage the printed layer by accident (or tumble dryer), iron it through a parchment paper to smooth it again.