Zini: Adjusting with Moore's Law

There's really a parameter missing, namely how often the equipment is replaced
with new and improved hardware. For simplicity, set that to once a year. That means
the new machinery is 2^(m/12) times as fast.

Here's a table showing how 15200 years becomes as a function of the number of
months used in Moore's law. Even at 36 months doubling time we still get there in
~35 years!

mth rate years
--------------------
12 2.00 12.9
13 1.90 13.9
14 1.81 14.9
15 1.74 15.8
16 1.68 16.8
17 1.63 17.7
18 1.59 18.7
19 1.55 19.6
20 1.52 20.6
21 1.49 21.5
22 1.46 22.4
23 1.44 23.3
24 1.41 24.2
25 1.39 25.1
26 1.38 26.1
27 1.36 26.9
28 1.35 27.8
29 1.33 28.7
30 1.32 29.6
31 1.31 30.5
32 1.30 31.4
33 1.29 32.2
34 1.28 33.1
35 1.27 34.0
36 1.26 34.8

In Gnumeric, that is A1=12; B1=2^(A1/12), C1=ln1p(15200*(B1-1))/ln(B1)-1 etc.