Thank you for the reference! But as long as there is low quality data might not that data "pollute" the process (whatever that may be)? i.e., "GIGO". Is "low

Thank you for the reference! But as long as there is low quality data might not that data "pollute" the process (whatever that may be)? i.e., "GIGO". Is "low quality data" possibly necessary for a properly-working LLM?! [Aside: why the downvote?]