"Isn't guaranteed to be a failure".
Sorry, I struggle to interpret sentences like this. English isn't my first language.
Please clarify?
Are you saying that "it is not definitely a failure"?
I can't figure out if it's the above, or if it is this:
"won't necessary fail"
More specifically, I'm not sure if the implication is optimistic or pessimistic.
I hope that makes sense - the nuances of English are a delightful journey of exceptions; something my programming brain struggles with at times.