I agree it is not about a quarrel but you are still missing the fact that you cannot say how one person acts from the next. Is it true that your stance is true for the average person or most people? Yes, of course. But not every mind operates the same. If you keep claiming that "I" personally focus better without, and that I am silly for thinking otherwise, you are in fact stating an opinion because unless you know how I operate, you cannot say for sure.
Yes, I am human, but not all human brains work the same. If that were the case, we would not have those that see letters backwards, or those that can learn an entire language in a few days, etc. Now, I am not saying that I am special or whatever but I actually have to have more than one thing to focus on. I can not focus on just one thing. So, I say again, for me, using a cell phone in a quiet car does cause me to be more focused.
If my wife is in the car, or my kids, I cannot help but take my eyes off the road from time to time to look at who is talking to me. On the phone, my eyes never leave the road.
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