[FRC Blog] Einstein Report Released

[EricVanWyk]

The super simplified version:

Robot: Hey FMS, want to chat? Here is my key.

FMS: Looks good! Lets chat!

"Individual": Hey FMS, want to chat? Here is my key.

FMS: Hey, that key is wrong. I don't want to talk to you.

Robot: Aww, the FMS doesn't want to chat with me anymore. Was it something I said?

[Anupam Goli]

Originally Posted by EricVanWyk

The super simplified version:

Robot: Hey FMS, want to chat? Here is my key.

FMS: Looks good! Lets chat!

"Individual": Hey FMS, want to chat? Here is my key.

FMS: Hey, that key is wrong. I don't want to talk to you.

Robot: Aww, the FMS doesn't want to chat with me anymore. Was it something I said?

In the seriousness of the discussions going on, this one seriously made me laugh, and is a great analogy.

[JaneYoung]

These last few posts that took the time to answer Kelli's request - are proving very helpful. Thank you so much.

Jane

[EricVanWyk]

Super Simple Deauth:

"Individual": I am the FMS. I don't want to talk to you.

Robot: FMS, is this true? I still have stuff for you.

Actual FMS: No, what gave you that idea? Are you feeling ok?

Repeat.

Field Monitor: FTA! We need a counselor!


Result: Communication slows down, and can sometimes drop out entirely. This is a possible attack that was largely ruled out. If someone were to launch this attack, the Airtight system would count the number of "go away" messages and display an ugly warning when it hit a certain threshold. We found that that threshold was too loose, so we're tightening the chain. We can't set the threshold to 1, or we'd get false positives several times a match - it is a valid message to send.



Super Simple Priority Inversion:

Robot: Gyro, please reset yourself and verify proper operation.

Gyro: ... WHY IS THE EVERYTHING SPINNING SO FAST? HELP! ...

Robot: Are you working yet? How about now?

Vision Processor: Hey Robot, here is a whole lot of data for you.

Robot: Not now, I'm still waiting for Gyro to tell me he is ok. Put it in my mailbox, I'll get to it as soon as Gyro is ok.

Gyro: ... *puke* ...

Field: Robot, I keep telling you to reboot, but there there is nowhere for me to put my message to you.

Result: The robot code locks up. The cRIO's safety mechanisms kick in and prevent the bot from moving. This is actually a good thing. The bad part was that it wasn't able to get the command to reboot and try again.


Super Simple Network Tables Flood:

Dash Board: Hey Robot, here is some new data.

Dash Board: Robot, did you get that data yet? Hello?

Robot: Yep! Thanks! Yep! Thanks! Yep! Thanks! Yep! Thanks! Yep! Thanks! Yep! Thanks!...

Other Robots: Will you please shut up?

Result: A few seconds of extra lag. All of those unnecessary acknowledgements eat up radio time, and can cause brief control losses. The plan is to put fairness guarantees in place that prevent this type of error from affecting the other bots.

[Racer26]

@EricVanWyk: AWESOME analogies. Almost totally accurate too.

[Akash Rastogi]

Originally Posted by EricVanWyk

Gyro: ... WHY IS THE EVERYTHING SPINNING SO FAST? HELP! ...

Robot: Are you working yet? How about now?

Vision Processor: Hey Robot, here is a whole lot of data for you.

Robot: Not now, I'm still waiting for Gyro to tell me he is ok. Put it in my mailbox, I'll get to it as soon as Gyro is ok.

Gyro: ... *puke* ...

This might be the funniest thing I've ever read on CD. Thank you.

[Greg McKaskle]

There was discussion of a graphic novel form of the report. Eric, I think you are off to a good start.

Greg McKaskle

[BigJ]

Originally Posted by Greg McKaskle

There was discussion of a graphic novel form of the report. Eric, I think you are off to a good start.

Greg McKaskle

Who watches the watchdogs?

[s1900ahon]

Originally Posted by Greg McKaskle

There was discussion of a graphic novel form of the report. Eric, I think you are off to a good start.

Greg McKaskle

I'd rather EJvW draw some (xkcd-like) stick figure drawings in the page corner so we can just flip the pages really quick to animate the sequences.

[ratdude747]

Originally Posted by s1900ahon

I'd rather EJvW draw some (xkcd-like) stick figure drawings in the page corner so we can just flip the pages really quick to animate the sequences.

THAT would be so epic...

[dyanoshak]

Originally Posted by s1900ahon

I'd rather EJvW draw some (xkcd-like) stick figure drawings in the page corner so we can just flip the pages really quick to animate the sequences.

XKCD already has a character that could play the "Individual"... The Man with the Black Hat.



Note: This is a cropped frame from a XKCD Comic #929 "Speculation".

[plnyyanks]

Originally Posted by dyanoshak

XKCD already has a character that could play the "Individual"... The Man with the Black Hat.

Black Hat Guy is perfect for that.

...okay, maybe I have a xkcd addiction

[gracie.]

Originally Posted by plnyyanks

Black Hat Guy is perfect for that.

...okay, maybe I have a xkcd addiction

I love this one....
I think it'd be great to have some simple break-down of the report for people. I read it, though a large chunk of it was way over my head- this whole dialogue thing is a great way of explaining it

[Tetraman]

Originally Posted by EricVanWyk

Super Simple Priority Inversion:

Robot: Gyro, please reset yourself and verify proper operation.

Gyro: ... WHY IS THE EVERYTHING SPINNING SO FAST? HELP! ...

Robot: Are you working yet? How about now?

Vision Processor: Hey Robot, here is a whole lot of data for you.

Robot: Not now, I'm still waiting for Gyro to tell me he is ok. Put it in my mailbox, I'll get to it as soon as Gyro is ok.

Gyro: ... *puke* ...

Field: Robot, I keep telling you to reboot, but there there is nowhere for me to put my message to you.

Result: The robot code locks up. The cRIO's safety mechanisms kick in and prevent the bot from moving. This is actually a good thing. The bad part was that it wasn't able to get the command to reboot and try again.

Thank you very much for the laugh.

I made this for you:

http://i49.tinypic.com/ac9s5.png

[Ether]

Originally Posted by Tetraman

I made this for you:

http://i49.tinypic.com/ac9s5.png

Cute.