The special basic model 6.3.3 for
habitable "Earths 2", in solarlike systems,
with a technological civilization is called:
N_{ze}
= A· F_{sph}
· F_{gae }· F_{Liz}
Insert the new values into equation 6.3.3:
N_{ze} = (100300)·10^{9} · 1:15,000 ·
(1:359 – 1:1078) · 1:1001
This results in the following correction for theorem
6.4.1:
9.8.1 Theorem 
There
are probably 7 to 56 technological civilizations,
on an "Earth 2", in solarlike star
systems, in our galaxy. 
The General Basic Model 8.4.2 for habitable "Earths
2" in the galaxy, with a technological civilization,
is:
N_{zexGal} = &sum N_{zex} = A ·
&sum (F_{X} · ·F_{ph}· · F_{gae}
· ·F_{Liz})
N_{zexGal} &asymp A · F_{ph} · F_{gae}
· F_{Liz}
Insert the new values into equation 8.4.2:
N_{zexGal} = (100300)·10^{9} · 1:4200
· (1:359 – 1:1078) · 1:1001
This results in the following correction for theorem
8.4.5:
9.8.2 Theorem 
The
number of star systems in the galaxy, with
earthlike, habitable planets that could carry
technological civilizations, is most likely
between 22 and 199. 
Comparison Drake equation
Comparable here is the Drake equation 9.1.2 with 9
 109 extraterrestrial technological
civilizations. The Drake window coincides with the lower
part of the window from the General Basic Model.
The corrected Drake equation 9.5.3 provides 11 
146 alien technological civilizations. The
corrected Drake window is identical to the lower part of
the window from the General Basic Model.
Thus there is a good agreement between the Drake
equation and the general basic model.
9.8.3 Theorem 
The
General Basic Model and the Drake equation
represent two mutually equivalent approaches. 
Since the number of star systems from the basic model is
considerably larger than in the Drake equation, it can be
concluded that the upper limit F_{e}
is set too high for the probability of a second Earth.
