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gramar explaned | exurb1a

What Happens When A Woman Abuses A Man In Public?

Digitalfiend says...

I get what you're trying to say but you don't really have to be bigger to abuse someone. You're ignoring the fact that women are typically given the benefit of the doubt in domestic violence situations because of that sort of thinking. Abusive women can and do use that fact to their advantage; a man can feel powerless to defend himself for any number of reasons: fear of mob-justice, criminal charges, loss of job, financial ruin, etc.

It's interesting that the people they interviewed after the roles were reversed felt that the man must have done something to piss off the woman and that somehow justified her behaviour.

AeroMechanical said:

There is an extra dimension that needs to be considered resulting from the biological fact that men are bigger and stronger than women. I believe you do need to consider gender, even though it would be nice if you didn't.

4 Revolutionary Riddles

Digitalfiend says...

Yep, I realized my mistake while reading a comment over on YT.

Nice explanation here:
https://youtu.be/aFGEe5d70qY?t=6m53s

ChaosEngine said:

This line is incorrect Vavg = (V1+V2)/2. That only applies if you run at V1 and V2 FOR THE SAME AMOUNT OF TIME.

Speed is Distance divided by Time, so the formula for calculating average speed is Dtotal / Ttotal.

The problem is that that only works if your second lap can be longer than the first lap.

If they are the same distance, the maths are undefined.

V1 = D1/T1
V2 = D2/T2

Vavg = (D1+D2)/(T1+T2)
if (D1 = D2) then
Vavg = 2D1/(T1+T2)

if Vavg = 2V1 then
2D1/T1 = 2D1/(T1+T2)
then T2 = 0

therefore V2 = D1/0 .... cannot divide by 0 (and no, <ahref="http://www.numberphile.com/videos/divide_by_zero.html">it's not infinity )

4 Revolutionary Riddles

Digitalfiend says...

The track question seems really straightforward, so I must be missing something.

The question is how fast do you have to run the 2nd lap such that the average of the two laps (Vavg) is twice the velocity of the 1st lap (2V1); so Vavg = 2V1 (says right in the video). Unless I'm missing something, V2 has to equal 3V1:

Since the problem states that Vavg must be 2V1, we can substitute that in the average calculation below:

So, Vavg = (V1+V2)/2 becomes 2V1 = (V1+V2)/2

Now solve for V2:

V2 = 4V1-V1
of
V2 = 3V1

i.e. your 2nd lap must always be 3x faster than your 1st lap so that the average of the two laps is twice the velocity of the 1st lap.

No?

ChaosEngine said:

Are you sure about that? Let's say the track is 100m for simplicity's sake and you run it at 1m/s (so 100s).

...

Video Shows Bumblebee Pulling A String To Get A Treat

Debunking Hydration/Dehydration - Adam Ruins Everything

Digitalfiend says...

So are we not supposed to preemptively hydrate when performing intense exercise in adverse conditions?

For instance, I've done 40-60 min cycling time trials (or any prolonged FTP effort really) in 30-35c+ (ambient) weather and have noticed that if I don't properly hydrate, I'll stop sweating part way through which can lead to a loss of performance. I've never noticed cramps but I can lose up to 4-6 lbs of water over a hard 2 hr ride in the heat. Since I sweat a lot when I workout, the heat doesn't bother me too much but I do need to drink more. Is it possible our brains are not tuned to quickly respond to a rapid loss of water, like during a hard cardio workout? Therefore, drinking water when you feel thirsty might only be a good recommendation when you're performing at low- to moderate-levels of exertion.

I agree that most people are likely not dehydrated but not consuming water during a hard cardio workout seems like bad advice.

A Woman's Guide to Woodworking - Building an End Table

Here's Why You Should NEVER Stand Behind a Tablesaw!

Digitalfiend says...

...that and maybe use your tools properly (or a different one)?

Fingerboards or rollers work great, especially ones that mount to the fence that you can use to apply pressure from the top to help keep the piece of tipping. A sled/jig would have helped too.

But yeah, I learned the hard way how powerful table saws can be when a piece of 1/8" mdf I was cutting somehow skewed a bit, rode up onto the saw blade and was flung back into my abdomen. It felt like I got hit with a baseball bat and the welt it left was impressive. Never made that mistake again. It was frustrating too because I'm super cautious when it comes to hand placement, etc (push sticks, rollers, fingerboards all get used) - but I didn't really think about a piece of 1/8" mdf turning into a projectile!

How powerful illusions reveal glitches in your brain

chicchorea (Member Profile)

Misconceptions about getting sick - mental_floss

Digitalfiend says...

Misconception #8, regarding efficacy of the flu shot, is not so cut and dry:

http://www.cbc.ca/news/health/flu-vaccine-paradox-adds-to-public-health-debate-1.2912790

The flu vaccine may also not be as effective for the elderly:
http://archinte.jamanetwork.com/article.aspx?articleid=486407

I have nothing against vaccinations for the more serious illnesses like polio, etc - these vaccinations are effective and important. I'm just not so quick to buy into the flu-shot.



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