Traveller stats are the character's "I'm doing nothing" state. Like many NPC's, if they stay in that state and don't try to change, then they neither lose nor gain. However, since we're playing adventurers who are at least in theory driven to succeed they can make progress. As a person who has improved himself with age, I'm happy with the ability to do so.
Also, keep in mind that Dex is probably not a great mix with Med. Sure, you may have smooth movements normally but nervous tension will kill fine motor control. It takes education, insight, and practice to become a skilled surgeon. Skill level is a measure of how much you know about the topic at hand. Higher skill levels assume some real world experience as well as knowledge.
Statistically, if I remember correctly, a skilled person can perform a skill 5-25 times faster than an unskilled person. So higher skill levels can also let you respond faster. For example, most anyone with a target rifle, plenty of time and a basic understanding of shooting can put a round into a target at 100 yards with little effort. Add in threat of being shot back at, movement, lack of information about what's going on, and the task becomes much more difficult.
I prefer systems that let characters make progress in stats, skills, and resources.
Also, keep in mind that Dex is probably not a great mix with Med. Sure, you may have smooth movements normally but nervous tension will kill fine motor control. It takes education, insight, and practice to become a skilled surgeon. Skill level is a measure of how much you know about the topic at hand. Higher skill levels assume some real world experience as well as knowledge.
Statistically, if I remember correctly, a skilled person can perform a skill 5-25 times faster than an unskilled person. So higher skill levels can also let you respond faster. For example, most anyone with a target rifle, plenty of time and a basic understanding of shooting can put a round into a target at 100 yards with little effort. Add in threat of being shot back at, movement, lack of information about what's going on, and the task becomes much more difficult.
I prefer systems that let characters make progress in stats, skills, and resources.