koti

I have to say wow too dimreepr. Am I right to assume that according to you there is no corelation between islamic extremism and islamic religion?

And there goes the elusive moment when we had it figured out

But if it bends it be real ain't it?

I agree. Thats why it is futile to answer the title question of this thread. Or better yet, its not futile, its a badly stated question.

This is a nice analogy but a bit misguided in my opinion. If we corelate this analogy to the subject at hand, I presume we have to assume that elasticity is analogous to curvature of space time. Therefore spacetime is the rubber toy being exposed to elasticity and spacetime curvature is the elasticity. I wouldn't attempt to argue wether elasticity or curvature is a "physical thing" By all means both of these phenomena I would concider "real" but we also concluded in many threads that "real" is such a subjective term that it doesnt make sense to use it in this context. Now, as for the title of the thread (the question at hand) do we have a solid definition of "physical" ? We can safely assume that "mathematical model" is a well defined and simple concept - its a measuring tool. As for "physical", previous threads shown that its not a simple task to define it In fact I don't think anynody has, its more of a semantics game. If we define "physical" as something which has to have mass, energy, volume or charge than things like spacetime or the 4 forces cannot be considered physical. Yet in my opinion they are - semantics again. So in order to answer if spacetime is a physical thing and/or just a mathematical model we need to define "physical" Although I've read and watched numerous media on this subject since I've come to this forum 6 months ago, I cannot find a clearcut answer. For me it remains an intuitive answer (which doesnt satisfy me btw) - "if it bends, its a physical thing"

Yep, youre right John & Strange. My mistake. For some reason I figured that the check in process will take an infinite amount of time.

This is another issue that you raised. I agree that it's difficult if not impossible to implement the concept of infinity to a hotel. There is always an infinite number of vacant rooms btw. My issue is with time though. Come to think of it, I'm not sure now if it takes a finite or infinite amount of time to perform an operation of checking a guest in/out.

Although I have a question, I've decided to post this in the Brain Teasers & Puzzles section. The infinite hotel paradox goes like this: We have a hotel with an inifinite amount of rooms filled with an infinite amount of guests. A new guest comes in to check in therefore we move each guest to the next room and are able to free room nr 1 to be occupied by the new guest - nothing changes, we still have an infinite number of room and an infinite number of guests. Same thing if a guest checks out...we move all the guests this time to the previous room and we end up with the same result - infinite number of guests and rooms. Nice classic paradox. My question is...it occurs to me that any operation on the guests moving from room to room will take an infinite amount of time therefore the result of any operation will never occur. Doesn't this render the paradox/thught experimnet invalid ? Here's a video explaining the infinite hotel paradox for reference in case I wasn't clear above: To be clear on my question...I have no issue with the math, I'm having difficulties in understanding the validity of such a thought experiment if it contains time infinities. Any thoughts?

Well...I can assure everyone here that one thing is for sure. Tampitump is going to apologize to everyone in this thread in a couple of days as usual so be patient with him.

Unless your'e getting payed in cash, you can look at your yearly bank statement and that will be your most accurate salary calculation.

Recently there's a lot of hype about the NASA's impossible EM drive thruster that supposedly "breaks" Newtons 3rd law. There's this peer reviewed paper that explains how it works. I lack the propulsion/physics background to judge whats going on here, is there someone competent who can explain what is the deal?

This is a great, simple example of spacetime curvature, thanks for posting it. Feynman was a lover of simplifying concepts thats why he is so popular. I think we were both involved in that "is spacetime real" thread a couple of months ago where I had the same notion as you are having right now - if it curves, it has to be real. We went through Gravity probe B, frame dragging, etc. Ultimately I was rightly smacked by swansont and studiot and came to the conclusion that its not right to deal with spacetime curvature and spacetime itself in terms of "realness", instead I decided to treat spacetime in my mind as an entity which has no structure but still plays on the same team with mass, velocity and gravity. Im still struggling with this in my mind but got nothing better so far. I hope that there is an accurate way of describing space and spacetime in terms of it being "real" but in order to do so we need to know more about quantum gravity.

Well, I guess you could say it was accurate in a way. Then again horoscopes are pretty "accurate" too.

Dang imatfaal...I haven't realised there is a breed of cyclists who push other cyclists off the road I see these "fixie" nutcases springing through traffic but you seem to be even something else. Looks like Hells Angels got nothing on you

Yes, you are right. What I'm saying is that both the bully and the person being bullied have a different angle in a firearm free environment and an environment where firearms are popular and many people carry them. I've been in situations in both of these worlds and it don't really work the way you explained above. As for the OP in a firearm free environment I think there's only one answer...you don't look away when you are witness to bullying - you intervene with adequacy to the situation. If its in public - expose the situation so more people become involved. If its not in public - use severe verbal aggression being prepared to act physically (works for me) If you are outnumbered on a bus surrounded by doesens of football hooligans - walk away. Every situation is different and obviously I do not intervene in all of them but whenever I can I try to pull the weeds.

As much as I agree with both of you, I think you missed one crucial point - weapon access. Where I come from, not many carry a firearm so there's less chance of getting killed in a physical situation. I have the "luxury" of knowing both worlds (used to live not far from Detroit) and I think weapons are a definite factor in this discussion.

Are you discussing this with your wife and kids or is this your private endevour?

Your comment almost brought tears to my eyes. Gosh I miss Jeremy Clarkson.

Campaigner ENFP, -A/-T Less than 5 min.

I know this is a Genetics forum and sory in advance for this comment but I can't help to notice the odds of your life and your family's life falling appart if the DNA test will show that you are not the father. I think those odds are close to 100% and you might take that into account as well.