Currently we are told the power grid struggles to handle the power load demand during the summer due to air conditioners. Yet scientists claim this same power grid could handle an entire nation of EVs. How? What am I missing?

I just rewatched The Winter Soldier the other day and a lot of the big guns on the helicarriers made me think about this. Does it make the bullet more accurate?

In most any browser on Windows, such as Chrome, Firefox, or Edge, finding an ad-blocking extension is a two-click solution. Yet, the process for properly blocking ads on a phone is exponentially more complicated, and the fact that many websites have their own apps such as Youtube mean that you might have to find an ad-blocking solution for each app on a case-by-case approach. Why is this the case?

I kind of understand the principle of it, but I can't get my head around how a domain was first 'owned' by someone in order for someone else to buy it.

I often see on clothes, bags, sheets, etc. a few % of polyester in the cotton cloth label. What does this mean and why do they do it? Are they weaving one out of every few strands out of polyester? Or is the fiber itself made of a few % polyester in composition? And what does it do for the cloth?

I just keep hearing "they have all your data" and I don't know what that's supposed to mean.

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Edit: thanks to everyone whos contributed, although I still remain confused and in disbelief over some of the things in the comments, I feel like I have a better grasp on everything and I hope some more people were able to learn from this post as well.

I was born in 1973, got my first computer in 1994, defragging was part of regular maintenance. I can't remember the last time I defragged anything, even though I have several devices with hard drives, including a Windows laptop. Has storage technology changed so much that defragging isn't necessary anymore? Is it even possible to defrag a smart phone hard drive?

edit to add: I apologize for posting this same question several times, I was getting an error message every time I hit "post"... but from looking around, it seems I'm not the only one having this problem today.

I always see in the movies that when they hang up a pay phone, you hear a coin drop. What’s the reason for this?

I have heard that they are used to train AI and self driving cars and what not, but if thats the case how do they know the right answers to things. IF they need to train AI to know what a traffic light is, how do they know im actually selecting traffic lights? and could we just collectively agree to only select the top right square over and over and would their systems eventually start to believe it that this was the right answer? Sorry this is a lot of questions

When I see shows from America being on air on a British TV channel (I watch on the BBC), I noticed that the sound of the films, music or in general, they go up by one. Why does that happen?