my favorite technological device?

my favorite technological device? 

mmmm is a difficult question because I am always questioning everything and perhaps in this logic a good technological device that is indispensable for me could be the subway or the public transport systems in general. they would be my favorite technological device, in this case I would not consider them to represent a quality service, in fact it is not, public transport today is a very fiery activity and can even be very unpleasant, therefore not It's my favorite because of that. Public transport is my favorite technological device because I depend on it, I depend on it every day is available a form of transfer that does not imply having a car or other forms of private mobilization ...

However, if I chose a second option of a favorite technological device, in short the computer, because on the one hand, all or most of its functions are also transferred to mobile devices such as the telephone and, on the other hand, they save us a lot of time and dedication in activities that are really difficult to do, such as mathematical operations and statistics that today are seen by computer applications and systems! we also have access to online databases and academic and non-academic literature that has free access! We can know the world by just moving a finger !. Despite all this, I still believe that all technological advances, whatever they may be, will always be limited by our human nature. although in theory we can know the world just by moving a finger, in practice we can only know a part among the immense complexity of it.