system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] Given the prevalence of muggle-borns and half-bloods, how is the muggle world still such an unknown for wizards?

I mean. We know that muggle-borns and half-bloods are a good chunk of the Wizarding population. They have or had consistent contact with the Muggle world and know quite a bit about it. Yet, how it is that the wizards' understanding of it is so shallow? Why are Muggle Studies at Hogwarts so full of wrong information? Wasn't there a single muggle-born who applied for the job or corrected this? How come muggle media and culture is so unknown when there is a constant influx of muggle-raised people? Don't they bring with them their stories, books, references? How is it that no muggle-born has tried to bypass the "magic messes with tech" thing by creating "magitek" devices such as magical televisions (the trope is that they would be magic mirrors), magic computers, etc? Wouldn't it be easier if they researched a magical way of storing and retrieving information just like muggle computers do? I mean, a single smartphone can store a library's worth of information and we can search keywords and such. Hasn't anyone ever thought about creating a magical version of that?
gpt
It's like living in an Amish community.

There is some overlap in the modern world, but they are generally an insular community with their own traditions and beliefs. It has only been a few decades since technology has completely outpaced magic in some aspects of life, especially in information technology . Harry Potter also takes place in the 90s, where the use of computers and the internet was just starting to become commonplace in the general muggle population. 

We were still using dial-up internet at the time, scanning and digital storage of literature wasn't as commonplace as it is today. Back then, microfilms would probably be the main way of storing literature as digital scanning wasn't as good in terms of the quality of the image.

The 90s wasn't the era of the smartphone, where almost every teenager is tech-savy to some extent. Think of the boomers that still can't use a computer today and think of how much worse it is for a wizard boomer.

But it is not like they completely ignore technology of the muggle world, they are just slow to adapt because magic takes care of most problems in the wizarding community. After all they use some technology, like the trains that Hogwarts use to transport it's students. They will slowly adapt to technology as and when it is useful for them to. 

They could always fly on their broomsticks to travel, but a train is more comfortable, safer and effortless, especially for young wizards that haven't learnt to fly yet. Even if there were tech-savy wizards ready to put modern muggle tech to use, who is going to maintain the system? 

There is no one in the wizarding community that is capable of working IT. A 2020s wizarding teen might be able to use a smartphone and know how to do basic IT stuff. But maintaining servers and networks, or even creating the IT infrastructure in the first place would be beyond them as the spent most of their teens studying magic. It's not like Hogwarts can just hire muggle IT staff either.