The young side included ten members of GUINNESS PRO12 high-flyers Glasgow's squad from the start, and the Warriors' players dominated the game scoring four of Scotland's five tries.
Seymour grabbed the final score of the afternoon after GUINNESS PRO12 teammates Jonny Gray, Sean Maitland, and Stuart Hogg had also crashed over.
Vern Cotter's first home fixture at the helm brought Scotland's first win over the Pumas at BT Murrayfield for 24 years, and Seymour insisted the new-look side was showing evidence of substantial progress.
"There is a great vibe around the place," said the 26-year-old. "That's not to say there wasn't one last year but there were a couple of results then that we were disappointed with.
"Greig Laidlaw talked in the dressing room before the game about drawing a line and moving past stuff that has happened.
"It's a huge year for us with the World Cup coming up and we just need to go out and focus on playing consistency and the type of rugby we want to produce. Saturday was one foot in the right direction.
"We scored 41 points out there, which is wonderful. But the reality is our opponents scored 31, so it was only a 10-point margin.
"It was great to get points on the board but we can't afford to make the mistakes we did against Argentina when the All Blacks come here.
"But we have some huge games coming up - starting with New Zealand - and we can ill-afford to shift points in the way we did on Saturday, because the likes of the All Blacks will take them far more easily and on a far
more consistent basis.
"But they are on our home patch. They have come over here to play us, so we want to create chaos for them."
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