aramis erak
Legend
Except that Classic was NOT 8+ for everything!!!Same with Traveller, roll 2d6+SKILL, 8+ is (usually, at least in early Traveller) a success, period, end of report. Technically there's a parry rule, but the use of primitive weapons is minimal, so it can practically be ignored. Specific situations are often called out in the rules where the 'DC' varies from 8, or there are specific modifiers, and here and there some things like your computer might provide an extra mod. Its an incredibly simple, totally unified, system published in 1977.
Looking at 77 PDF, Bk1. The only earlier is in GDW's playtests.
Bribery 8+, skill adds level
Forgery 5-, DM -2 per level. Rolled at inspection time.
Administration 7+, +2 per level
And that's just page 14.
Medical's most important use, healing PCs, isn't even rolled!
And so on.
You might want to check what's in it vs how y'all played it before you try to use it as evidence of existing design. How you remember it is not uncommon as to how it was played, but it's very much NOT how Marc claims he ran it (see his t4 designers notes - Marc claims, and there's evidence for, it having been between 1 and 5 dice ≤ Att + Skill).
Now, combat to-hit? Yes, that's 8+ on 2d6 + Skill ± AttMod. Att Mod can range from -4 to +2.