2019 Fall Open Errata

[aseem.keyal]

Please post any errors you noticed in this thread.

[csheep]

The Song Dynasty TU:

For 10 points, name this dynasty founded by Zhao Guangyin, which repeatedly fought the Jin dynasty until Mongols conquered both of them.

This should read Zhao Kuangyin (and the pronunciation guide should probably be changed as well)

Wikipedia tells me Zhao Guangyin is someone entirely different from a little earlier. https://en.wikipedia.org/wiki/Zhao_Guangyin

[Majin Buu Roi]

Whoop

The Song Dynasty TU:

For 10 points, name this dynasty founded by Zhao Guangyin, which repeatedly fought the Jin dynasty until Mongols conquered both of them.

This should read Zhao Kuangyin (and the pronunciation guide should probably be changed as well)

Wikipedia tells me Zhao Guangyin is someone entirely different from a little earlier. https://en.wikipedia.org/wiki/Zhao_Guangyin

Whoopsies. Thanks for pointing this out, Michael.

[Youngster Joey]

Packet 7 Bonus 8:

HASTE imaging utilizes this process, which produces images in which the CSF is much brighter than those produced by its counterpart. For 10 points each:

[10] Name this process that uses a longer repetition time and time to echo, but not as long as FLAIR.

ANSWER: T2-weighting [accept word forms; prompt on TWI or T2WI]

I would say it's probably incorrect or at least misleading to describe T2W by comparing it to FLAIR. FLAIR describes an inversion recovery (IR) sequence that nulls signal from substances with long T1 values (typically fluid); the reason for a long echo time (TE) is because of the long inversion time (TI) used, making the image T2W. At game speed, one might be tempted to guess STIR instead (which uses a short TI and thus TE to null fat). It might also be dangerous to clue T2W as a process, as it's merely a property of the image that results from scan parameters. For example, HASTE and FLAIR (both T2W) use completely different pulse sequences that would be best described by other terms such as fast spin echo (FSE) for HASTE and IR for FLAIR.

[coldstonesteveaustin]

The value of this quantity for a circle of radius r is “one over r-squared,”

This should be “one over r.”

[VSCOelasticity]

The value of this quantity for a circle of radius r is “one over r-squared,”

This should be “one over r.”

Thanks for catching that! It has been fixed.

[Sima Guang Hater]

Packet 7 Bonus 8:

HASTE imaging utilizes this process, which produces images in which the CSF is much brighter than those produced by its counterpart. For 10 points each:

[10] Name this process that uses a longer repetition time and time to echo, but not as long as FLAIR.

ANSWER: T2-weighting [accept word forms; prompt on TWI or T2WI]

I would say it's probably incorrect or at least misleading to describe T2W by comparing it to FLAIR. FLAIR describes an inversion recovery (IR) sequence that nulls signal from substances with long T1 values (typically fluid); the reason for a long echo time (TE) is because of the long inversion time (TI) used, making the image T2W. At game speed, one might be tempted to guess STIR instead (which uses a short TI and thus TE to null fat). It might also be dangerous to clue T2W as a process, as it's merely a property of the image that results from scan parameters. For example, HASTE and FLAIR (both T2W) use completely different pulse sequences that would be best described by other terms such as fast spin echo (FSE) for HASTE and IR for FLAIR.

Also odd this wouldn't prompt on MRI, since T2-weighted imaging is a subset of MRI

[Good Goblin Housekeeping]

Packet 7 Bonus 8:

HASTE imaging utilizes this process, which produces images in which the CSF is much brighter than those produced by its counterpart. For 10 points each:

[10] Name this process that uses a longer repetition time and time to echo, but not as long as FLAIR.

ANSWER: T2-weighting [accept word forms; prompt on TWI or T2WI]

I would say it's probably incorrect or at least misleading to describe T2W by comparing it to FLAIR. FLAIR describes an inversion recovery (IR) sequence that nulls signal from substances with long T1 values (typically fluid); the reason for a long echo time (TE) is because of the long inversion time (TI) used, making the image T2W. At game speed, one might be tempted to guess STIR instead (which uses a short TI and thus TE to null fat). It might also be dangerous to clue T2W as a process, as it's merely a property of the image that results from scan parameters. For example, HASTE and FLAIR (both T2W) use completely different pulse sequences that would be best described by other terms such as fast spin echo (FSE) for HASTE and IR for FLAIR.

Also odd this wouldn't prompt on MRI, since T2-weighted imaging is a subset of MRI

The bonus suggests this is something is not FLAIR though so MRI seems like an odd answer to give

[Sima Guang Hater]

Packet 7 Bonus 8:

HASTE imaging utilizes this process, which produces images in which the CSF is much brighter than those produced by its counterpart. For 10 points each:

[10] Name this process that uses a longer repetition time and time to echo, but not as long as FLAIR.

ANSWER: T2-weighting [accept word forms; prompt on TWI or T2WI]

I would say it's probably incorrect or at least misleading to describe T2W by comparing it to FLAIR. FLAIR describes an inversion recovery (IR) sequence that nulls signal from substances with long T1 values (typically fluid); the reason for a long echo time (TE) is because of the long inversion time (TI) used, making the image T2W. At game speed, one might be tempted to guess STIR instead (which uses a short TI and thus TE to null fat). It might also be dangerous to clue T2W as a process, as it's merely a property of the image that results from scan parameters. For example, HASTE and FLAIR (both T2W) use completely different pulse sequences that would be best described by other terms such as fast spin echo (FSE) for HASTE and IR for FLAIR.

Also odd this wouldn't prompt on MRI, since T2-weighted imaging is a subset of MRI

The bonus suggests this is something is not FLAIR though so MRI seems like an odd answer to give

Huh? It's a different subset of the same general thing, you should still prompt on it

[jsingh]

Not necessarily an error, but the Incan road bonus in packet 9 doesn’t accept Quechua names such as Qhapaq Nañ. Not sure what the word for bridges is, but the first part should have a Quechua alternate answer as well.

[Eddie]

Not necessarily an error, but the Incan road bonus in packet 9 doesn’t accept Quechua names such as Qhapaq Nañ. Not sure what the word for bridges is, but the first part should have a Quechua alternate answer as well.

The Quechua word for "bridge" is chaka (plural chakakuna).

[jmarvin_]

Qhapaq Nañ

I want to note that now that this is a thing in the present version of Sid Meier's Civilization VI people are going to give this answer a lot more frequently than most native American original-language terms. Just something to be aware of for future answerline writers.

[Majin Buu Roi]

From some of the buzzpoints, it's become clear that some folks were unfairly negged for spectacularly knowledge on the "China" religion tossup due to the fact that entirely unrelated "heterodox religious groups generically tarred as 'Shouters'" were also found in Trinidad and Tobago, which I was not aware of. This is relevant for exactly one four-team mirror, but I have added "it's not Trinidad and Tobago" to render the clue uniquely-identifying (hopefully, but who know's maybe there's a third set of "Shouters" somewhere). Apologies to folks who were screwed by that.

[Carlos Be]

Not necessarily an error, but the Incan road bonus in packet 9 doesn’t accept Quechua names such as Qhapaq Nañ. Not sure what the word for bridges is, but the first part should have a Quechua alternate answer as well.

ANSWER: Inca rope bridges [prompt on bridges with “made by which culture?”]

This should also accept "Quechua rope bridges."

[Deepika Goes From Ranbir To Ranveer]

Re-reading the Nebraska tossup, I believe Georgiana travels to Boston, not New York, in "A Wagner Matinee".