Yep. For any calculation of up to a dozen or so numbers it&#x27;s far easier, quicker and more pleasant to use my HP than the computer, and even more so when in a meeting or on the phone. UI matters, physical interfaces matter.<p><a href="http:&#x2F;&#x2F;aviation.stackexchange.com&#x2F;q&#x2F;22729&#x2F;8205" rel="nofollow">http:&#x2F;&#x2F;aviation.stackexchange.com&#x2F;q&#x2F;22729&#x2F;8205</a>