Sorry, I realized I hadn't read your response correctly, so I tried to delete my post, but the forum wouldn't let me. (Hence, the "processing..." comment.)
Automatic Failure only applies to "Check Skill" (roll under skill only), not general tasks (roll under C+S)?
I actually did not realize it was only on Check Skill rolls. That's the disadvantage to PDF's verses physical books...I end up zoomed in too much and don't think to scroll up to see what comes before. Sigh.
The total chance of failure is bigger when rolling 2D than when rolling 1D unless you have an absurdly high skill, so no problem.
Depends. The total chance of
automatic failure is LESS when rolling 2D. 16.67% on 1D, and 2.78% on 2D. It
might be more or less in "reality," however, depending on the situation.
For example, if a character is trying to explain a pun to someone with a different native language, I could see that being an Easy Language Skill-only check (assuming the GM doesn't think puns have anything to do with intelligence - a point I have heard before and strongly disagree with...but whatever). That means, despite having level 7 in their native language, the PC will still fail 16.67% of the time.
If, however, they decided to try to explain the pun without using the word "punny" the GM may say it's no longer an Easy task, it now has a normal difficulty rating. So, the PC being ever so cleaver, calls in a friend to help. It's now a cooperative, skill-only check that will automatically fail if either of them rolls a 6. In fact, the more people who join in the effort, the more likely it is to fail. (Unless cooperative, skill-only tasks work differently?)
Another example would be if a character gets disoriented in his home city, it's probably an Easy knowledge (homeworld) check to get re-oriented and not get lost. The highest this skill can be at is 6, but as it's an Easy task the PC will still fail to re-orient 16.67% of the time in the city in which they grew up.
Sure, the chance of failure is greater if, under the same circumstances, the difficulty was increased one level. Then the PC would need 6 or less on 2D6 which is ~58%. However, the rules also give common mods and say "almost certain" should be +5. That means that an almost certain, standard difficulty, skill-only (at 6) check would only fail about 2.78% of the time, but the same, almost certain task would fail 16.67% if it was made easier. Of course, in such a case, why are you rolling for it in the first place? Still.
So, the mechanism is quirky, but not a problem in game?
I can't say for sure as I do not yet understand the rules well enough to be able to play the game. For sure, I did not realize this only applied to skill-only checks. That should mean it's less of an issue only because it doesn't come up as often. But saying that something that's broken should not be fixed because it won't be encountered that frequently doesn't sit well with me. It's like the difference between a professional piece of software and one that someone's cousin wrote for them from their own basement. They may both be fine pieces of software, but if I'm starting to see errors come up in uncommon situations with the professional code I'm not going to buy the expansion.
So, I've come up with a "house rule" that I am going to use in these cases. (I think there's a thread for house rules, though, so I'll post it there.) It could also apply to the spectacular results as well.