A lot of us have made the mistake of underestimating technology. How big can the internet be? What real work would our computers or mobiles be capable of? There were plenty of questions in the early days of internet & mobile that had experts puzzled and take polar views. I may have many such tales myself, but here is a simple one. Also personal.
I have had a desktop computer for most of my life. I think the earliest I got one was sometime in 90s. It was a privilege. And in over two decades of computing it is only in 2020 that I have learnt how useful large screens are. So much so that I believe it is a disservice to spend on a good laptop before buying a large external monitor (27″ or more!). I also think organisations need to promote use of large external and even multiple screens for professionals. It is a must have for productivity.
Using an external screen is increasingly common for coders. But the benefits are far from limited to just software engineers. During my international visits, I found it lavish to see even admins & operations staff at co-working space using external displays with their laptops.