  In the History of Ideas, a succession of philosophical and scientific
achievements, concerning the concept of space and its dimensionality, were
essential to contribute, after a long period, to the theoretical possibility of
thinking physical time with more than one dimension. Meanwhile, such a progress
brought with it the expectation that one can either understand the role of
dimensionality in the World or disclose how certain physical phenomena depend
on it. Some of these issues are sketched throughout the text, as well as those
remarkable moments in the History of Science where important contributions were
made in order to give a satisfactory answer to the following inescapable
question: -- How many dimensions does time have?
