Hacker News: heykjo

New comment by heykjo in "Show HN: Free textbook on engineering thermodynamics"

heykjo — Sun, 26 Apr 2026 20:10:23 +0000

I'd love to send you a few euros; but the checkout process requires both an email and a cell number. Are those strictly necessary to authorize a cc payment?

New comment by heykjo in "How Hyperconnected Cities Are Taking Over the World"

heykjo — Fri, 29 Apr 2016 16:52:40 +0000

"global strategist and world traveler" - that so totally qualifies him to bloviate!

New comment by heykjo in "Java Aerodynamics Toolkit (JAT)"

heykjo — Wed, 23 Sep 2015 12:48:55 +0000

Astrodynamics, not Aerodynamics

New comment by heykjo in "Voyage to Nowhere: The Amazon Kindle Story"

heykjo — Mon, 13 Apr 2015 13:48:16 +0000

Right about the Kindle - still like my original with the keyboard best. All wrong about the Echo - best thing in my kitchen. Not sure where the connection to typography is. Bit of a whinger?