why do Google say subliminal don't work but YouTube they do

Google does not explicitly state that subliminal messages don't work, but rather, they have guidelines and policies related to subliminal messaging content. Google aims to provide users with high-quality, reliable, and safe information and products. Therefore, they may restrict or discourage content that claims to have subliminal effects without credible evidence or scientific backing.

On the other hand, YouTube is a platform that allows individuals to upload and share various types of content, including videos related to subliminal messages. Since YouTube is a user-generated platform, it's essential to understand that the content you find there may not always be verified or endorsed by scientific consensus.

It's important to critically evaluate the credibility and evidence behind claims related to subliminal messages, as the effectiveness and impact vary significantly depending on the individual and the specific circumstances.