Parmandur
Book-Friend, he/him
Well, the BBC just published an article that opened up saying that Dungeons & Dragons hasn't changed inn50 years, so sure, why not...?the math base is the same for 24 years... take d20 add the mod from a stat (take stat subtract ten and divide by 2) then add any proficiency you have (in 3e it was different skill ranks or base attack, in 4e it was 1/2 level or 1/2 level +2, in 5e it's the prof bonus) then maybe a magical bonus... roll high is better vs a DC
1e and 2e also had the same core math... but it was more case by case (roll low for stat/skill roll high for attack and save, roll low on a d10 for initiative and roll low on d% for some class skills)

Though seriously, beyond the big broad strokes the 2014 and and 2024 versions of 5E have the same math down to the nitty-gritty: that's why you can mox and match Monsters from them (they introduced tOneD&D Monsters a couple years ago now, and we've been mixing freely) and PC options.