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Because this is a reference people may rely on, getting the numbers right matters more than anything. If a diameter, area, resistance, or ampacity value looks wrong to you — or you have a source that disagrees with ours — please tell us. Corrections are the messages we act on first.
For an accuracy report, it helps to include the exact gauge and column you mean, the value you expected, and where your figure comes from (a code edition, a manufacturer sheet, or a standard) so we can check it quickly. Feature ideas and general questions are welcome too.
One thing we can't do by email is design or sign off on your specific wiring. We can explain how a gauge, a conversion, or an ampacity column works, but decisions about an actual circuit belong with a licensed electrician who can see the installation and apply your local code.