Lol get over yourself

Database inconsistency for one thing. This works for frontend web services but how do you reconcile the writes between the two servers?

This is nuts. If we broke mobile safari for our app we'd lose 50% of our traffic

I know I'm lucky to still have a job at a company that seems to be doing just fine despite the pandemic but I kind of wish I could have a month of time completely to myself

About to come out of two months of parental leave and it was fantastic.

Revisit this in a week or two

Babbel offers much higher quality language courses (but has no free tier)

I hate that Duolingo has no grammar lessons or dictionary for vocabulary. Is that different for Babbel? How is that structured?

Duolingo also has a weird discrimination between iOS vs Web/Android. In the iPhone App you lose health with wrong answers and wait for regeneration or have to buy "hearts", this restriction is not present on Web.

Babbel does grammar, yes, as well as explanations of exceptions and idioms, and the sentences and dialogues are culturally relevant to the language

And in fact, in used book "arbitrage", the seller always has a very, very good excuse, which is that s/he "sold the book already" to someone in s/her imaginary brick-and-mortar store.