# Tag Archives: math

# USDA

And you call yourself a geek …

10

11

101

111

1011

1101

10001

10011

10111

11101

11111

100101

101001

101011

101111

110101

110111

111101

1000111

1001001

1010011

1011001

1100001

1100101

1100111

1101011

1101101

1110001

1111111

What is the **next** number in the series?

# Seven Red Lines SOLVED

# SRL – Technical Discussion

Re: Seven Red Lines

Via #1 Son:

Thought you’d appreciated the discussion at my work about this:

**TC** Embarrassingly, I’ve done the opposite in meetings.

Requester: I want two perpendicular lines.

PM: Drawing two perpendicular lines is really hard. No resources for it.

Dev: Actually, I can do that in an hour.

PM: /facepalm

3 days, 19 hours ago

**JH** Increase the dimensionality and you can certainly get 7 lines all perpendicular to each other.

1 day, 5 hours ago

**K** Can you show me that on a whiteboard?

1 day, 5 hours ago

**JC** Sure. Get him a 7 dimensional whiteboard.

1 day, 4 hours ago

**JH** {{1,0,0,0,0,0,0},{0,1,0,0,0,0,0},{0,0,1,0,0,0,0},{0,0,0,1,0,0,0},{0,0,0,0,1,0,0},{0,0,0,0,0,1,0},{0,0,0,0,0,0,1}}

1 day, 3 hours ago

**AH** (Two vectors are perpendicular if their dot-product equals 0.)

1 day, 3 hours ago

**JH** As for the color part, I feel like there was an xkcd about this recently…http://xkcd.com/1351/

1 day, 3 hours ago

**PA** The internet has everything, even seven dimensional orthogonal vectors

1 day ago

**JC** Projecting seven dimensions down to two dimensions doesn’t seem to work very well. Also, the colors are wrong.

1 day ago

**M** If you don’t like the color, priests from AoE will fix it for you

1 day ago

**SF** It’s not too hard to plot 5 dimensional data on a 2 dimensional canvas:http://imgur.com/69Jc8Ch

1 day ago

**GM** but the question is, can you make them red and transparent?

25 minutes ago

**SF** color=”red”, alpha=0.5 🙂

19 minutes ago