John Theune writes:

Once again your most certainly wrong. WAAS is very much a part of the
GPS SYSTEM and your statements to the contrary just reinforce your
incredible ignorance of the real world as opposed to your simulated world.

GPS has nothing to do with simulation. GPS is a system in itself,
unrelated to WAAS. The latter is an augmentation used in some forms
of aviation. GPS does not require WAAS, and WAAS is not a part of
GPS.

It's important to understand these facts if you wish to use GPS safely
in aviation. The utility and accuracy of GPS-based navigation systems
vary greatly with the implementation and the use or non-use of
augmentation strategies such as WAAS. Assuming that GPS alone
provides the same accuracy as WAAS augmentation is dangerous (as is
overestimating the accuracy of GPS with or without augmentation
generally).

You would do well to spend less time on knee-jerk attacks against the
opinions of others with whom you disagree, and more time on learning
how GPS is used for aviation. Your safety may depend on this.

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