Mcreetus

I think it was Deki calling his sister a genius, the nanny just did not want to ruin Deki's small newfound joy, so she played along and said that it could be a nickname the 1-year old Medea gave him

Since she’s portrayed as a genius from a young age, I doubt that’s the case. Probably just the author didn’t know, after all, why would you? Unless you were a parent/grew up with baby siblings

I can see we are talking about different things here, Ur comment's first line mentions the nanny having thought of Medea as a genius

I was referring to how it may have been the brother saying that his sister is a genius for being able to say "Deki" at that time, whereas the nanny did not think of Medea as a genius particularly because of that, been a while since I read that chapter so don't even remember what exactly was going on -.-"

And yes, I did live with siblings/cousins/nieces and nephews with a big age gap, enough for me to have to take care of them, am even known as the 2nd mother of my younger brother #－.－) Also studied about it to some extent in psychology classes, but won't say that I have as much knowledge regarding babies' and children's developmental stages as someone who has studied it more in depth, not sure how that relates to this but nice talk ^^

I understand your previous comment, but I was relating it to the whole chapter/webtoon on how it is most likely just a minor mistake. I read it all quite recently so it’s still fresh in my mind.

But yeah, I do linguistics in university and one of our first modules is child language acquisition so I know quite a lot.

It’s different because the first few chapters were translated unofficially by scanlators. The ones later on are the official chapters from tappytoons.