In 1964 Gordon Moore, the founder of Intel, wrote an internal paper where he made a shockingly BOLD prediction.
Moore looked at the progress of the semiconductor industry over the previous 5 years. He noticed that the number of electrical connections on an integrated circuit (computer chip) had doubled every 12 months to 24 months.
Also known as exponential growth.
Moore predicted that the computing power of integrated circuits would continue to double every 18 months for the next 10 years. Meaning computers would get much faster, smarter and smaller every 18 months. 
People thought he was crazy, but 50 years later his prediction has become a self fulfilling prophecy which has emerged as a driving principle for exponential change in western society. His initial prediction is now known as Moore’s Law.