Is there such a thing as infinity, Or is it merely a human logical construct - purely theoretical entity?

Of course it does! I mean, think about it: you got the amount of prime numbers, the amount of even numbers, and then you got yo mama's waist size.

Yes, & to the "Or" part partially. An investigation of numbers, math & their concepts seeming to reflect the nature of things has been noted by a number of mathematicians & tho it appears that man has invented them that isn't that cut & dry. The symbols constructed by man do appear to represent more than just things observable & things that can be manipulated & it is to these things that the science of numerology endeavors to understand & explain.