Nothing is so unpredictable as a throw of the dice, and yet...

Nothing is so unpredictable as a throw of the dice, and yet every man who plays often will at some time or other make a Venus-cast: now and then he indeed will make it twice and even thrice in succession. Are we going to be so feebleminded then as to aver that such a thing happened by the personal intervention of Venus rather than by pure luck?