Also, failing certain checks can lead to new and interesting situations, so it's not necessarily a bad thing but your mileage may vary.
I've seen Larian advertise this a number of times in the early days, and I've seen a few forum-goers repeat it as a defence a number of times over the course of EA, but never really witnessed it myself.
Could you give me an example of where attempting a check and failing it provides an outcome that is actually
different from just choosing one of the auto-fail options and/or simply not trying at all? I cannot think of any.