I'd communicate this to the reader right away. You can still have it be a twist for the characters themselves, but when it comes to genre fiction, there's a limit (I feel) to the force with which you can throw your curveballs without pestering the reader. People buy and read these sorts of works...
Perhaps he shall from above. I'll raise a toast to him when the time comes. I am joking a little, but I do indeed appreciate it when a work of fiction has educational use and works hard to immerse the reader into a character's profession, life and/or craftsmanship. A book I love is Butcher's...
Reading that Moby Dick is about the minutiae of whaling and sailing makes me want to read it. I'd love an education on both. Here I thought it was just a generic adventure ;)
So far when such a situation presented itself I've either had main characters who were able to understand the language and could translate it, or I used an omniscient POV who informed the audience. That said, there are instances where I think it would benefit the narrative if the fictitious...
The scenes I have struggled with most were not the most difficult, but the earliest. I started writing in English when I was fifteen, after being inspired by a location in Skyrim. At the time, I wanted to write a story about a group of bandits occupying a bridge fortress, which fans of the game...
I don't see the point of an app. If convenience is the goal, you can just make a bookmark or shortcut to the website. More importantly, the back-end of the site is handled by one (rather busy) person, so adding an app would only complicate the site's operations.
You'll never hear me make a case for artificial sweeteners, but we have been ingesting (losds of) beer and bread since the days of Sumer, so I do have my doubts over the absence of grain on your pyramid. But I am biased by my own perceptions. As long as I am in good health, at the end of the day...
If it works for you it works for you, that's the most important matter, but I would caution against aggrandizing the prehistoric past too much. Although it has been a relatively short period of time, humans haven't stopped evolving and phenotypes are of great, and as of yet not fully understood...
If I know anything about nutritionists and their prescriptions, it's that they have a paradigm shift every decade or so. Pasta and beer have done right by me.