11-20-2019, 07:19 PM

11-20-2019, 07:33 PM

(11-20-2019 07:27 PM)badaze Wrote: [ -> ](11-20-2019 07:19 PM)toml_12953 Wrote: [ -> ]

Yes. There’s no photo !

Really? My friends all see one. Maybe a link would help

https://www.dropbox.com/s/7apqajp1svssr6...1.jpg?dl=1

11-20-2019, 07:38 PM

I see the problem, and I think she knows.

But where does the picture come from?

But where does the picture come from?

11-20-2019, 07:44 PM

There seems to be a hidden figure.

11-20-2019, 07:47 PM

(11-20-2019 07:38 PM)Claudio L. Wrote: [ -> ]I see the problem, and I think she knows.

But where does the picture come from?

I got it on https://livinginaretroworld.tumblr.com/p...-mainframe

11-20-2019, 10:42 PM

11-20-2019, 11:27 PM

11-21-2019, 01:06 AM

(11-20-2019 11:27 PM)rprosperi Wrote: [ -> ](11-20-2019 10:42 PM)Valentin Albillo Wrote: [ -> ]That 6 she's pointing at ought to be a 7.

V.

Wow, that's a really good eye Valentin!

Oh! You mean with the stick? Yeah, math....

That room-sized computer behind her got it wrong but the pocket-sized DM42 got every digit of the answer right!

11-21-2019, 09:39 AM

(11-20-2019 10:42 PM)Valentin Albillo Wrote: [ -> ]That 6 she's pointing at ought to be a 7.Excellent! And that of course is the point of the promotion: the computer won't make a mistake like that.

V.

I found the original:

https://www.gettyimages.co.uk/detail/new.../107644439

"A woman standing in front of a General Electric mainframe computer and pointing to a complex calculation on a blackboard, circa 1955. (Photo by Herbert/Archive Photos/Getty Images)"

11-21-2019, 07:11 PM

In "Surely You're Joking, Mr Feynman" he describes the algorithms he used to take care of this sort of thing when they were using ladies with calculators to perform calculations at Los Alamos. Rather than stopping the calculation and starting over, they would introduce a colored card with the required correction, these cards would have priority and would soon catch up to the erroneous result and the calculation would then proceed.

11-22-2019, 01:36 PM

Perhaps I'm being dense but I'm not understanding how this progression works. Add the first two numbers and then some multiples of one of those numbers in a geometric sequence?

11-22-2019, 02:29 PM

(11-22-2019 01:36 PM)Logan Wrote: [ -> ]Perhaps I'm being dense but I'm not understanding how this progression works. Add the first two numbers and then some multiples of one of those numbers in a geometric sequence?

It's just long, written-out multiplication. It's probably been so long since anyone here has done math this way, no one recognizes it any more, lol.

11-22-2019, 02:35 PM

(11-22-2019 02:29 PM)rprosperi Wrote: [ -> ](11-22-2019 01:36 PM)Logan Wrote: [ -> ]Perhaps I'm being dense but I'm not understanding how this progression works. Add the first two numbers and then some multiples of one of those numbers in a geometric sequence?

It's just long, written-out multiplication. It's probably been so long since anyone here has done math this way, no one recognizes it any more, lol.

Well now I feel sheepish. Seems obvious now that it's just the multiplication of the two numbers with all the stages in between!

11-22-2019, 03:26 PM

(11-22-2019 02:35 PM)Logan Wrote: [ -> ](11-22-2019 02:29 PM)rprosperi Wrote: [ -> ]It's just long, written-out multiplication. It's probably been so long since anyone here has done math this way, no one recognizes it any more, lol.

Well now I feel sheepish. Seems obvious now that it's just the multiplication of the two numbers with all the stages in between!

It's not that you didn't recognize the multiplication, it's that you were very distracted by the girl... so don't feel bad.

"Lady with a stick" has some attitude in her eyes... Why is she still looking at me like it was MY mistake? I wasn't even born then, I swear!

11-22-2019, 03:54 PM

(11-22-2019 03:26 PM)Claudio L. Wrote: [ -> ]"Lady with a stick" has some attitude in her eyes... Why is she still looking at me like it was MY mistake? I wasn't even born then, I swear!

She has eyes???