"I'm less sure why fierce nerds are impatient, but most seem to be. You notice it first in conversation, where they tend to interrupt you." The answer is prett

"I'm less sure why fierce nerds are impatient, but most seem to be. You notice it first in conversation, where they tend to interrupt you." The answer is pretty obviously ADHD. Interrupting and "impatience" are very common traits in people with ADHD.