I turn now to some details. The scorecard in
Table 2 shows three
parameter choices. In the Einstein-de Sitter case the density parameter
is 
m = 1 and
space curvature and the cosmological constant 
are
negligibly small. The second case has zero
space curvature and positive , the third
negligibly small and
negative space curvature.
A passing grade (
) means the
measurements are consistent with the parameters within the
Friedmann-Lemaître model,
a negative grade (X) that there seems to be a significant
inconsistency. The greater the number of question marks the greater the
level of doubt about the grade.
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