Key Concept: What is the correct answer? (NLTRN)

[Indiana]

Obviously it is correct to play tight out of position HU...BUT there must be times when we should loosen up our starting requirments. It appears that there are two schools of thought out there when considering how to open your calling range out of position against button raises from a loose preflop raiser.....So here's my question:

"Against a loose button raiser, is it better to open your pre-flop calling range out of position or tighten it up?"

I know what my opinion is, but many good players disagree about this.