In the Archer and Tucker friendship thread EntAllat commented,
"In my opinion, the "father/son" dynamic works really well between Travis and Archer because of their age differences (and Travis's enthusiasm and Archer's experience). But it also works well between Archer and Malcolm, despite the fact that Reed's supposed to be only a year younger than Trip."
I watched the entire four years of Enterprise assuming that Malcolm was older than Trip by at least several years. He just seemed older to me. Then when I began to read fanfic he was invariably referred to as being younger. This surprised me. I don't see Malcolm as younger.
Is there any canon to support this, or did people assume it because Trip was of a higher rank? I just thought that Trip was the young 'engineering hot-shot' that rose quickly through the ranks.
It is no big deal, I was just curious.