Those were not empty promises but words of personal experience,you may not like them but it does not change what they really are.



Your opposite statement on the other hand can be summed up in three words: everything can happen. Now those are some pretty empty words. Information about something that is sure to happen has zero value and that is exactly how much you bring with said argumemts. Of course there are ups and downs, but nothing is symmetrical. Nature doesn't like symmetry and life is part of nature. If you insists this could be pictured as a harmonic function of higher order. Roughly.