[Fester Chugabrew]

As long as "infinity" remains an abstract rather than concrete (i.e., with evidence) concept, it is not rational to invoke it scientific research.

My question to you was not whether infinity is an abstract concept, only whether it is "anti-rational."

[Junior]

It is anti-rational when used as a tenet in scientific research in that it cannot be measured and there is no evidence of its existence.