best way I can, lol. My own does that, which is compounded by the fact that within my own house I have a similar set up, so it's double blind. Thus the algorithms, which are rather complicated to someone as math challenged as I, but are used in the marketing industry for situations similar to this.

thou and I, my friend, can, in the most flunkey world, make, each of us, one non-flunkey, one hero, if we like: that will be two heroes to begin with. (Carlyle)