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Author Archives: gmcdavid
Monday Night Irish Class, May 6, 2013
Irish Class, May 6, 2013
Rang Gaeilge, 6ú lá Mí na Bealtaine 2013
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Monday Night Irish Class, April 29, 2013
Irish Class, April 29, 2013
Rang Gaeilge, 29ú lá mí Aibreáin 2013
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Future Tense Corrections
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FoghlaimfidhFoghlaimeoidh tú Gaeilge go leor ag an gceardlann. -
TéifidhRachaidh mé go California an mhí seo chugainn. -
Ní
ithfidhíosfaidh mé haggis ariamh. -
PacáileoidhPacálfaidh sé ag an nóiméad deireanach, creidim.
[Stem broadens, Type I] -
OscaileoidhOsclóidh fear an phoist na litreacha níos déanaí. -
Ní
rachfaidhrachaidh mé ar ais go dtí an siopa sin. -
Ní
thiománóidhthiomáinfidh mé an carr sin aríst!
[Stem stays slender (less common), Type I] -
An
bhfaighfidhbhfaighidh sibh bhur ndóthain bia leis an gcóisir anocht? -
An
mbeirfidhmbéarfaidh na Gardaí ar an ngadaí? -
Nach
n-imireoidhn-imreoidh siad peil amárach? -
TarfaidhTiocfaidh an traen ag an sé. -
LéoidhLéifidh muid an leabhar sin sa gclub atá againn. -
DeirfidhDéarfaidh mé é aríst agus aríst eile. -
GheobhfaidhGheobhaidh na cailíní éadaí nua go luath. -
ScríobhaidhScríobhfaidh mé alt leis an nuachtlitir, nuair a bheas an t-am agam.
Monday Night Irish Class, April 22, 2013
Irish Class, April 22, 2013
Rang Gaeilge, 22ú lá mí Aibreáin 2013
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An mhí seo i Minnesota
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Níl féar a ghearradh ann.
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Am maith leat éin? Is féidir leat go héasca a féachaint ar na spideoga dorcha ar an sneachta bán.
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Cealaitear comhdhláchta deacair.
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Má bhainann tú ag obair amach, is laoch tú ansin. Beidh oibrithe eile ag fanacht sa bhaile.
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Tá bialanna don séasúr ann.
Monday Night Irish Class, April 15, 2013
Irish Class, April 15, 2013
Rang Gaeilge, 15ú lá mí Aibreáin 2013
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Seamróg: D’fhéadfadh sé a bheith níos measa
Is féidir go mbeadh an Taoiseach buidéal uisce beatha a thabhairt don Uachtarán. Ní fadhb é inniu. Ach bhí
George W. Bush Uachtaran SAM cúig bliana ó shin. Ní dhóladh Uachtaran Bush deochanna alcólacha.
Má thug an Taoiseach dó uisce beatha, bheadh scéalta grinn faoi Uachtaran Bush. Cuimhin linn go raibh
scéalta grinn go leor Bush cheana. Bheadh sé bronntanas breá do Jay Leno agus David Letterman.
Cuir deireadh leis an náire a bhaineann le bronnadh seamróige (2/2)
Space News
Putin unveils $50 bn Russian space drive
The total proposed NASA budget for Fiscal Year 2014 (which starts Oct. 1, 2013) is $17.7 billion. This is $55 million lower than 2012, and $170 lower than 2013. That’s a drop of roughly only 1 percent, which these days can be considered holding steady.
Monday Night Irish Class, April 8, 2013
Irish Class, April 8, 2013
Rang Gaeilge, 8ú lá mí Aibreáin 2013
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| craiceann | skin | |
| go mall | slowly | |
| foireann | staff, team | |
| cul an tí | back of the house | |
| easna | rib | f4 |
Will was back, so we went over the first part òf the homework from last time. Corrected notes follow.
Cuir deireadh leis an náire a bhaineann le bronnadh seamróige
Thomas Bayes and O.J. Simpson
After posting about The Prosecutor’s Fallacy I recalled a similar case with the Defense in the O.J. Simpson trial. The issue was summarized in What is your favorite problem for an introduction to probability?:
… one of Simpson’s lawyers, Alan Dershowitz, noted that even though Simpson beat
his wife, that hardly mattered, because in the United States, four million women are
battered every year by their male partners, yet only one in 2,500 is ultimately
murdered by her partner (1 in 1000), so, by the ‘reasonable doubt’ criterion, this is
irrelevant. The jury found that argument persuasive, but it’s spurious. The relevant
question was what percentage of all battered women who are murdered are killed by
their abusers, which ain’t 1 in 1000, but rather 9 in 10.
For a clear explanation of the details see Chances Are, by Steven Strogatz, which is reprinted in his excellent book, The Joy of x: A Guided Tour of Math, from One to Infinity.
The Language of Space
Want to be an Astronaut? Learn How to Speak Russian
You may wonder: “Shouldn’t Cosmonauts have to speak English?” I expect most of them learned it long before joining the space program.
In fact the situation is not symmetric. American astronauts as well as Russian Cosmonauts fly to space from a Russian-speaking site (the Baikonur Cosmodrome) in a Russian vehicle (the Soyuz).
The Prosecutor’s Fallacy
Bayes’ Theorem … A Simple Example
Notation: Prob(A) means “the probability of event A” and Prob(A|B) is “the probability of event A, given that event B has happened.”
Bayes’ Theorem: Prob(A|B)xProb(B) = Prob(B|A)xProb(A)
Now, Prob(A|B) and Prob(B|A) are often confused by even the most intelligent of people. The confusion often appears in legal cases and is sometimes called the Prosecutor’s Fallacy. Bayes’ Theorem relates these two distinct conditional probabilities.
Followed by a straightforward example of why this really matters.
From Hilbert Space to Dilbert Space, and beyond 