LOL. Lack of care for spelling errors a sign of enlightenment? Perhaps for some, but I don't that's a universal indicator, especially if proofreading is your profession. I believe that Yogani said he has an engineering background, so imagine if he said: "Well, we don't have to get all these math equations and schematics right when it comes to building this bridge. If some are off, no big deal. Hopefully the bridge will hold up, even if a few of the proportions are incorrect. It's only people that are driving over the bridge anyway."
I'm being melodramatic with the bridge example. Obviously, some things matter more than others when it comes to functionality, aesthetics, and the design process. The firsthand and secondhand thing is very trivial, and would not make or break any kind of literature or instruction.
But words do matter, and precision is important. One word can change the entire trajectory of a teaching. Suppose we were instructed to
harshly favor the mantra. That would make a difference, wouldn't it?
I had sent Yogani an e-mail correcting the firsthand and secondhand thing from one of the main lessons, so my quip was kind of an "inside joke" that I figured would nevertheless make sense in the context of criticism. Fortunately, I don't think we have to worry about hurting anyone's feelings, if our intentions are of the lighthearted nature, and if we just seek to add humor to the benevolent atmosphere of these forums.
Spell those words how you want to! It's not crucial! Just trying to maintain consistency.