Amateur photographers typically use flash in dimly-lit areas and no flash in brighly-lit areas. Professional photographers often do the opposite, so the lighting is more uniform across the whole scene. – Matthew Butterick
A cool tool is anything useful that is superior to comparable items. If you think this tool is inferior suggest a better one. You are welcome to insult a tool, but comments containing insults to individual people will be deleted. Corrections of fact are always welcomed, if stated politely. Recommendations of better tools are dearly wanted and may be elevated to the front page.