HP calcs are really not that accurate..

[Joe Horn]

Those who prefer to be lied to, so as to hear what they want to hear, should buy non-HP calculators, which fudge the displayed results to look like what they think that the user probably wants to see, with warts shaved off and blemishes hidden behind cosmetics (aka "guard digits").

Those who prefer to be told the truth, and see EXACTLY what the result is, warts and all, should buy HP calculators, whose philosophy is "What You See Is What You Have".

All calculators are inaccurate internally. Some just hide that fact by lying to the user, and they get away with it because many users (e.g. DA74254) prefer to be lied to. We HP aficionados prefer the truth.