Trade Secrets: negative know-how

Question: does trade secret law protect knowing, for example, something does not work? ("Negative know-how.")

Answers:

• Old Restatement of Torts: NO, but can sometimes recraft negative into a positive statement of knowledge
• UTSA & Modern Restatement of Torts: YES, although tricky re: personal knowledge of a person who leaves company--the law is unclear on this in regards to negative know-how.