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You need two separate concepts, relative velocity and separation rate. Relative velocity is the speed one object measures another to...

When you apply relativistic velocity addition equations, remember to be very specific about whose inertial reference frame each speed is...

Google "relativistic velocity addition".

You have overlooked the relatively of simultaneity. Say that observer A is located on earth, B on the ship, and both agree that the...

Start from scratch. It's about how people in an inertial reference frame synchronize their clocks at different locations: 1) Something...

I think it helps to suspend your disbelief for as long as it takes you to learn how it works. Putting your mental energy into arguments...

Here are some more solutions; In each case, the triangle constructed in green is similar to the triangle highlighted in brown which...

BBC News once posted a challenging geometry problem from a Chinese maths exam taken aged 16, comparing it to the British exams taken at...

If you lay the 100 cards out in a row, there is a statistical symmetry going first to last or last to first.

Of course! I think that does it.

I am not sure either. But probably it would be something like there are as many permutations of the deck with 3 greens at the beginning...

That's what I initially thought and, IMO, your simulation proves that is the final answer. I guess is that, if there are more of one...

I did a Monte Carlo simulation of 100000 shuffles with drawing from the front and got a mean value of 1.514 and a simulation of 100000...

That was my first thought, and it still might be valid. But an abundance of one color certainly changes the odds of the last card...

That would be the same as drawing N cards without replacement that match the first color.