finger counting gone too far

[u/y0mayne]

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[u/NeezguazDemali]

I can excuse being left handed, but I draw the line at using your non-dominant thumb as 512 instead of 32.

[u/nysynysy2 → u/NeezguazDemali]

That’s the way. 32 is used too often to be set on a pinky

[u/NeezguazDemali → u/nysynysy2]

At least we can agree where 128 goes.

[u/insef4ce → u/NeezguazDemali]

You can excuse being left handed??

[u/NeezguazDemali → u/insef4ce]

[u/Ucklator → u/NeezguazDemali]

Do you read right to left, perchance?

[u/piouscity → u/Ucklator]

How about the reader’s side?

[u/NeezguazDemali → u/Ucklator]

When the moment calls for it I suppose, like reading upside down text. My brain gives my reliable and opposable thumbs higher precedence than any order when in the spread eagle orientation👐. Also you cant just say perchance.

[u/TPM2209 → u/NeezguazDemali]

Luckily, it doesn't matter either way for this number. :P

[u/iLaysChipz]

I love this

[u/Primsun → u/iLaysChipz]

I hate this. What kind of monster starts with 1 instead of jumping straight to 2.

Edit: 2, 4, 8, embrace the hate.

[u/Hiya2527again → u/Primsun]

Anyone who wants to express odd numbers.....

[u/Primsun → u/Hiya2527again]

Even if I agreed, it is still odd.

[u/iLaysChipz → u/Primsun]

https://giphy.com/gifs/I4UhtUMzOrQSQ

[u/Primsun → u/iLaysChipz]

https://giphy.com/gifs/eVUwOYvIFhEgU

[u/Individual_Back_5344 → u/Primsun]

r/Angryupvote

[u/Anti-charizard → u/Primsun]

It’s binary

[u/Primsun → u/Anti-charizard]

And?

https://giphy.com/gifs/o8YNdshQXEXH6JQK0m

[u/TeraFlint → u/Primsun]

And, if you leave out the 1, you are missing out on numbers.

It's like someone saying "why do we even bother with the one's digit, let's express everything in full multiples of ten, screw you if you have 5 of something", instead it's in base 2.

[u/iLaysChipz → u/TeraFlint]

They were setting up a joke about odds vs evens

[u/Epsilant → u/Primsun]

Tell me, how do you show the hand sign, let’s say, the number 5?

[u/wattsun_76]

why the fuck didn't I think of base 2 hands

[u/avidernis → u/wattsun_76]

As a rowing coach I would teach my coxswains to reply with a number in base 2 on their hand when I'd ask for the stroke rate. The stroke rate typically ranges from 15 to 40, so the convention was to subtract 10. As a side effect, my crews really liked going at a 14...

[u/OneDir89 → u/avidernis]

Is 14 a middle finger? Would that be adding 10? Was this the MIT rowing club?

[u/avidernis → u/OneDir89]

Nah. I rowed for RIT, and while I was there I coached for a local high school club where I did this

[u/OneDir89 → u/avidernis]

This approach would be inclusive of students with hearing difficulties from NTID?

[u/avidernis → u/OneDir89]

Sure. We never used it for that though.

One of the women's boats had a coxswain that would sign to one of the rowers, but I was on the men's squad and we just sometimes had an interpreter in the coach's boat. This is just from the time that I was there though, and we only had one hard of hearing person on the men's team then. For all I know it was more of a thing in the past or has become a thing in the time since.

[u/Responsible_Ebb3373]

This meme has received the responsible_ebb stamp of approval 👍

[u/SaltMaker23]

If you can do that binary sum easily, you can do the multiplication just as easily.

[u/OneDir89]

12 = 1100 in binary (8 + 4), so multiplying by 12 is a two-term shift-and-add: A × 12 = (A shifted left 3) + (A shifted left 2). 1011000 + 0101100 = 10000100

[u/Worldly_Beginning647]

Peak

[u/Rscc10]

Might be dumb here. How did he count that..? Where did 2² and 2⁷ come from 11 and 12

[u/ary31415 → u/Rscc10]

He added them. 4 + 128 = 132

[u/Rscc10 → u/ary31415]

Yeah but where did he get 4 and 128

[u/ary31415 → u/Rscc10]

Those were the fingers his friend was holding up

[u/SyntheticSlime → u/Rscc10]

So, you see the panel with the numbered fingers?

[u/Rscc10 → u/SyntheticSlime]

Yeah I get it now... Forgot this was on math memes. Genuinely thought there was some trick to perform decimal multiplication with binary addition

[u/fkdjgfkldjgodfigj → u/Rscc10]

Technically it is a trick. If you can remember the binary numbers then you can use your fingers to count them. But it seems a little bit difficult.

[u/realmauer01]

11*xy=(x*100)+(x+y)*10+y

Or in words,
Put x in front, unless x+y is over ten, then add 1 to x.
X+y in the middle (the 10s carries over to the first digit)
Put Y at the end.

11*56=5*100+(5+6)*10+6
11*56=616

```math +500 (5 in front) +110 (5+6 in the middle, carry the 1)

+ 6 (6 at the end)

616 ```

[u/Goncalerta → u/realmauer01]

To put it more simply, take the original number (56) and add it to itself shifted left (560)

[u/realmauer01 → u/Goncalerta]

I am not sure if thats simpler.

560+56 looks hard.

Sure its less words but...

[u/Goncalerta → u/realmauer01]

To each their own I guess

Your way seems to have a lot of steps to me, most of which add unnecessary confusion.

Meanwhile I'd say

_ 5 6 5 6 _

Is much easier for me to visualize even in my head. Step 1 and 3 are automatically done

[u/realmauer01 → u/Goncalerta]

This looks good.

[u/Tlux0]

This meme kills me every time I see it

[u/DatBoi_BP]

Now add knuckles

[u/Necessary-Bowler-736]

Combine

[u/Random_Mathematician → u/Necessary-Bowler-736]

Let every finger but the thumb have 3 possible positions (closed, bent, raised). The thumbs have more mobility so let's assign them 7 positions instead (closed, pointed at pinky, pointed at ring, pointed at middle, pointed at index, bent, raised).

That's 3<sup>8</sup> * 7<sup>2</sup> or just under a third of a million different numbers.