The rate of technological advancement is growing at an exponential rate?

The number of scientific papers presented...

The productivity of businesses...

The rate of disease and the rate of cure...

The food production per hectare...

Etc...

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The rate of technological advancement is growing at an exponential rate?

For instance we have made the same amount of progress in the last 10 years as we did in the previous 20. The next five years will bring us the same amount of progress as the last ten or more and so forth. Not that I disagree with this statement per say, but isn't it rather hard to quantify...

Exponential growth means the rate of growth is directly proportional to the state of growth. So people don't reproduce in an arithmetic fashion, where 2 people have 2 or 3 kids that replace them and population stays roughly the same. People have 2 or 3 kids and now constitute a family of 4 or 5 people, later maybe each kid has 2 kids and there's 8 or 9 in the family. Population has to go up for this to happen. People don't die right after they reproduce.

I can not site too many cases, but I am aware of Moore's Law concerning the doubling of circuit density every two years.

"Moore's law describes a long-term trend in the history of computing hardware. The number of transistors that can be placed inexpensively on an integrated circuit doubles approximately every two years.[1] This trend has continued for more than half a century and is expected to continue until 2015 or 2020 or later.[2]"

http://en.wikipedia.org/wiki/Moore%27s_law