WHAT IF? XKCD Answering the question on all our minds:

“Is it possible to build a jetpack using downward firing machine guns?”

-Rob B

Hit up “What If?”over at XKCD for all the math and some other interesting info as well such as:

The GAU-8 Avenger fires up to sixty one-pound bullets a second. It produces almost five tons of recoil force, which is crazy considering that it’s mounted in a type of plane (the A-10 “Warthog”) whose two engines produce only four tons of thrust each. If you put two of them in one aircraft, and fired both guns forward while opening up the throttle, the guns would win and you’d accelerate backward.

hahaha wow.  Thoughts?

Also, if you have any interest in math, science, or engineering make sure you’re following the XKCD comic.

Hat tip: Stephan, Eric


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Caption: We can’t let this happen again. We need to build a secure TWO-day-before-retirement safe room.

Hearing of people dying so close to retirement, or before retirement in general always makes me sad.  If it wasn’t for the “two weeks notice” courtesy (sometimes law?) I always thought the best way to retire from any job would be, just to tell your boss you won’t be coming in the next day once you decide the current day is your last.


A recent comic from XKCD:

haha I could really see that happening.


XKCD kills it on another gun related comic:


I am consistently amused by XKCD… that guy is awesome.  If you like Engineering/Science humor I urge you to follow it.



That guy isn’t into reenacting past battles.. he lives in the now.


Source – XKCD

Argh.. those damn tumbleweeds. :P