Here's the question you clicked on:
blkmrc
Who is the most important Mathematician in last century
@klimenkov, If it weren't for mathematicians, you'd be still living in the stone ages.
@blkmrc Look at the list of winners of the Fields medals for the 20th century http://www.mathunion.org/general/prizes/fields/details/ We cannot look at the Nobel prize winners in mathematics because the prize is not awarded in the area of mathematics. There's drama about that. My personal choice is Benoit Mandelbrot, the father of fractal geometry. Perhaps, others will add their favorite.
Have you heard of Alan Turing? A British mathematician who helped cracking the code of the German Enigma machines in WWII. After the war, he did research on the way digital computers work. His work is also very important in the field of Artificial Intelligence. One of his ideas was the "Universal Turing Machine", an imaginary machine that works like a computer. Essentially he proved that every computer, no matter what program or operating system it uses, is exactly the same. He is also known for the "Turing Test", in which a human asks questions to another person or a machine. Mostly, there are only a few questions necessary to reveal that the other side is not a person, but a computer. A computer program that passes the Turing Test is said to have Artificial Intelligence.
Please disregard the reply from @klimenkov. Most Ambassadors do not reply in such manner. As @Directrix said it is really all about your choice in who you think and your own personal opinion. Many Mathematician have got us where we are today. I suggest checking out @Directrix link for some more info. if you need more assistance please feel free to message me :)
Sorry, I did not think that this would hurt you.