It's difficult to imagine our world today without computers. Of course,
they have been around since World War Two, but they were clunky,
massively expensive things that had all the calculating power of a
brick. [..] Today, of course, they are everywhere and we have become
so dependent upon them that many people almost feel naked without
one, For some, they even provide the very means of maintaining a
livelihood: we use them to keep track of our finances, write books,
design logos and sell real estate. ) Makes it hard to understand how
our ancestors did so well without them, doesn't it?
8. The Aloplane
Just as the locomotive made the world a smaller place in the
nineteenth century, the airplane did the same for us in the twentieth
century, shrinking our planet to the point that a person could fly
anywhere in the world in a matter of hours. Not only have they made
travel quick and safe, but aircraft provide many other services as
well: from crop dusting and fighting forest fires to overnight delivery
of packages and chasing hurricanes. They have also revolutionized
warfare, [...] but then no Invention is perfect.
7, The Automobile
[...] Henry Ford's assembly-line production style made the
automobile affordable and accessible to the average person (before
Ford's Model T was introduced in 1908, only the fabulously wealthy
could afford a car). The automobile gave everyone a degree of mobility
and personal freedom our forefathers could only dream of and turned
entire generations of teenagers into raging revheads.
C, Rocketry
L] Without the rocket, it is safe to say we would not only have
never gone to the moon or visited every planet in our solar system.
Rockets also place satellites into orbit around our planet, so without
them we also wouldn't be able to use GPS, predict the weather, make
International calls or, for the most part, even use our cell phones much
of the time.
5. The submarine
Though submersible vessels had been used in the past (the CSS
Hunley during the Civil War) and the first true submarine was invented
in the 1880's, It wasn't until the twentieth century that the modern
submarine came into its own. What started as an irritating, but still
deadly, weapon in World War One grew into a monstrosity in World
War Two - sinking more than any other type of weapon used. Today,
with the advent of nuclear power - which gave the submarine nearly
unlimited range and endurance. [...]
4. Antibiotics
Until Alexander Fleming discovered penicillin in 1928, almost any
little bug that someone picked up was potentially fatal. Once penicillin
and later a whole range of other antibiotics - came on the scene,
however, death due to bacterial infection became rare, resulting in a
greatly reduced mortality rate and much longer life-span. [...]​