  Until recently precision electroweak computations were fundamentally
uncertain due to lack of knowledge about the existence of the Standard Model
Higgs boson and its mass. For this reason substantial calculational machinery
had to be carried along for each calculation that changed the Higgs boson mass
and other parameters of the Standard Model. Now that the Higgs boson is
discovered and its mass is known to within a percent, we are able to compute
reliable semi-analytic expansions of electroweak observables. We present
results of those computations in the form of expansion formulae. In addition to
the convenience of having these expressions, we show how the approach makes
investigating new physics contributions to precision electroweak observables
much easier.
