Those all seem negative and hostile to me. The biggest one thing I've learned in all the years I've been teaching and speaking about Adobe products all over the world, writing books and hundreds of articles, and, more recently, authoring dozens of video courses on Adobe products for Pluralsight, is that no one knows everything. I've been called "expert," "guru," "master," and similar things, and even carried official titles branding me as an Adobe Expert, Adobe Community Expert, and Technical Lead for [several Adobe products]. With all my experience and knowledge, I still learn something new about Adobe products and, especially, how people use them, every day. It's better to keep an open mind that someone else knows something you don't than to look for ways to say "you're wrong and I'm right." Of course, there ARE such situations. Someone recently recommend 100% of all four process colors as the best formula for Rich Black, which, by any experienced measure, is wrong. In such cases, I try to state my opinion backed up by evidence and maybe a little bit about my experience to lend credibility to my opinion. At the same time, I do try to allow that, however unlikely in even the most extreme case, the opposing viewpoint might be just as valid. I typically say, things like... I understand your point, but my opinion is... I disagree because... That's a new method/use/idea to me, I've always done it/seen it done this way... I think you'll have better results if you... And so on.
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