[GSlob]

"If the creatures are sinless, we should leave them alone so that we don't inadvertently (or intentionally) tempt them..."
Realistically speaking, whatever we could find using our present search techniques would likely be so much more advanced than we are that us tempting them would be out of question - we wouldn't be able to offer them anything they do not have already or might want. In comparison with them we would be like the Neanderthals at best - what is there to tempt with? Our best stone axes and a fresh mammoth steak? The hope would be that THEY leave us alone.

[hispanichoosier]

Realistically speaking, whatever we could find using our present search techniques would likely be so much more advanced than we are that us tempting them would be out of question

You are correct when you say this, given the state of our "present search techniques." However, I was thinking more about the future, such as in the year 2500 or so. Given, you and I won't be here, but it's still an interesting theological exercise.