Good advice, but don't you think there is a possible danger in you not hearing outside noises? There is a reason we have ears you know, to alert us in case of danger when it is not necessarily visible to the eye.
Yes, of course there is danger, but the probability of a really hazardous event, which you may avoid by hearing, is very very low for most modern civilised environments where people spent prolonged periods of time, like sitting in plains/trains, or being in city rooms together with other people.
I would not consider reasonable using earplugs while walking in a jungle, or standing in a road/open space, or when driving a car myself :-) .
I would not consider reasonable using earplugs while walking in a jungle, or standing in a road/open space, or when driving a car myself :-) .