III. hasty generalization
A syllogistic fallacy is more of a generalization than it is a sequence or analogy. This error of reasoning occurs by first mentioning something broad/general then proceeds to make a conclusion about something that is very specific by means of generalizing. For example, this would be considered fallacy of syllogism:
All jets are air crafts. All propeller airplanes are air crafts. Therefore, propeller airplanes are jets.
Thus, you can see how a generalization is made about propeller airplanes being jets because they are both air crafts.
Yes they should! Most of you claiming that the "juvenile brain" is underdeveloped is on orthodox. The normal human brain doesn't stop completely developing until the age of 22. Does that mean that we should excuse anyone under the age of 22 of their crimes? I think not. Also, if a juvenile were to come into your home, murder your whole family just for the thrill of it, your decision on juveniles not staying in prison for life, would change.
I would say this is an example of alliteration.