It is perhaps inappropriately named, because there are a great many solutions to the problem posed, and there is now very little controversy over the answer.
It is perhaps inappropriately named, because there are a great many solutions to the problem posed, and there is now very little controversy over the answer. Many solutions make use of the relativistic Doppler shift, but perhaps the simplest explanation is that one of the observers feels an acceleration and the other does not, and this acceleration breaks the symmetry in the problem. For ten points name this apparent paradox arising from Einstein's theory of special relativity, so named because each of two siblings apparently should age less than the other.
It is perhaps inappropriately named, because there are a great many solutions to the problem posed, and there is now very little controversy over the answer.
{TWIN} Paradox