I always need to remind myself that it is in error confuse the spelling of indiscreet and indiscrete (= not separated into parts), which sound similar. Indiscreet is the more common word in general use and means “not tactful or able to keep a secret.” Indiscrete is a much rarer formal or technical word meaning “not consisting of separate parts.”
Rarer still is the form “indisconcrete”, which is where you might find such things as hoffas and other aggregates.
By the way, ‘Face. The Fermat comment was focused on his use of the margin of the book to make his statement. Don’t worry about understanding his equation, for few people do.