The aeroplane has also made the world a far more insecure place (e.g. the UK was protected from contintental Europe by the English channel and her navy before t

The aeroplane has also made the world a far more insecure place (e.g. the UK was protected from contintental Europe by the English channel and her navy before the advent of the air-age) and a far more dangerous place (e.g. look at WW2, the dropping the atom bombs, the Vietnam War). It it also, ahem, playing a leading role in our environmental self-destruction.