Final answer:
Percy Lavon Julian was the man who spread knowledge about creating the drug known as 'ready rock' through his accidental discovery of stigmasterol in soybean oil.
Step-by-step explanation:
The man who spread knowledge for creating the drug known as "ready rock" was Percy Lavon Julian. He was an established medicinal chemist who was focused on using soybean oil in the production of compounds like progesterone.
It was a fortunate accident when water leaked into a soybean oil storage tank, resulting in the discovery of stigmasterol, a primary ingredient in progesterone and similar drugs. Julian then worked to replicate and industrialize the process, making a significant impact in the pharmaceutical industry.