Geek & Nerd Haven

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Geek & Nerd Haven

A group for us Geek and Nerds to talk about things we like. Technology, sci-fi, movies, TV, collecting, games, comics, science, etc.

Members: 185
Latest Activity: Sep 27

Discussion Forum

Zombie Slot Machine

Started by Ruth Anthony-Gardner. Last reply by Loren Miller May 14. 2 Replies

Tristan Harris shows that using your smart phone is as addictive as playing a slot machine.How…Continue

Tags: app design, mind manipulation

Beyond fake news, bot networks, and trolls - to automated behavior manipulation

Started by Ruth Anthony-Gardner. Last reply by Ruth Anthony-Gardner Apr 1. 4 Replies

The Rise of the Weaponized AI Propaganda MachineCambridge Analytica, a new automated propaganda machine poised to manage White House digital…Continue

Tags: weaponized AI propaganda machine

CIA cyberwarfare on us

Started by Ruth Anthony-Gardner. Last reply by Bertold Brautigan Mar 9. 1 Reply

Just in case you feel the current administration doesn't have enough power, we find out that the CIA can take control of your iPhone and Twitter account, or watch you through your smart Samsung TV, at will. Moreover, the vulnerabilities they…Continue

Tags: cyber weapons, cyberwarfare, spyware, weaponized Apple, Google, and Microsoft vulnerabilities

AI against trolls

Started by Ruth Anthony-Gardner Mar 8. 0 Replies

Now Anyone Can Deploy Google’s Troll-Fighting AIHorray! I hope this works!A Google offshoot called Jigsaw declared war on trolls, launching a…Continue

Tags: troll control, Jigsaw

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Comment by Idaho Spud on January 9, 2015 at 9:53am

Yes, that top pencil does look ready to fail.

Comment by Joseph P on January 9, 2015 at 9:28am

Yup, it's a bit harder to take in, in a static photo like that.  It took me a few seconds to process that they were all tied together and represented something that stayed that way more-or-less securely (until that top pencil snaps).

Comment by Idaho Spud on January 9, 2015 at 9:24am

Mriana, perhaps you would have wondered if you had seen it in person.  The picture is a little dark on my computer, and so took me a while to figure the whole thing out.  I only recognized what it was supposed to be immediately because I've seen that type of thing many times before.

In any case, I enjoyed your sense of humor in your first post.

Comment by Joseph P on January 9, 2015 at 5:46am

It doesn't fall because the objects are perfectly balanced around their point of contact.  Well, the center of gravity of the whole doesn't have to be perfectly balanced on the edge of the table, but the closer you can get it to the edge, the more impressive you can make it look.

In this case, the head of the hammer and the head of the wrench are the heaviest parts of the ensemble.  Since those are under the table, they bring the center of mass a great deal back in that direction.

We're generally bad at estimating masses of relative things, when they're made of drastically different-mass materials.  With most hammers, particularly fiberglass ones, the head is several times the mass of the handle.  That's kind of the point: getting as much mass as possible further up the lever, away from the fulcrum, increasing the mechanical advantage without increasing the total mass that we have to hold.

The forks and wrench are similar.  We tend to think of wrenches as one, solid piece, about equally dense throughout, since they're made of solid metal ... but look which way the head is facing.  The forks are relatively light, since they're very thin.  Our brains say, "Well, that thing is made out of metal, and it's so long and wide," ignoring the third dimension.

Comment by Mriana on January 8, 2015 at 5:48pm

Interesting.  I didn't wonder why it didn't fall, but I am confused as to what it is and what it's purpose is.  Now I know what it's purpose is, but I guess I fell outside the box due to not wondering why it doesn't fall.

Comment by Idaho Spud on January 8, 2015 at 4:01pm

I recognized it immediately as one of those constructions that are intended to make people wonder why it doesn't fall.

It took a few seconds to see why it doesn't fall.

Comment by Mriana on January 8, 2015 at 3:43pm

Is it a ladder for us short people to get up onto the table?  There's a wrench in the works though, because I'm not sure if it would hold me.  lol  Other than that, I'm really not sure what it's suppose to be, so fork over the tools and I'll make a better ladder.  ;)

Comment by Ruth Anthony-Gardner on January 8, 2015 at 3:21pm

It took me a few seconds get this. How about you?

Comment by Ignacio Pizarro on January 8, 2015 at 3:18am

Thank you! I am new to the site, but loving it already.

About your previous post... I have seen Guardians of the Galaxy, too, and it is a great movie.

Also, over the holidays I saw "The Theory of Everything". I wasn't sure about it at first, as they said it has more "chemistry" than astrophysics... but it turned out to be brilliant.

Comment by Steph S. on January 7, 2015 at 4:27pm

Ignacio welcome to the group.

 

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