Originally posted by Delegated
The same evidence that would make me believe in Gods, Spirits, and Leprechauns. Adequate, undeniable, logical, and universally-observable evidence that confirms their existence. Fuzzy videos, obscure photos, and partial accounts of alien encounters (usually fabricated by lunatics anyways) are not convincing at all. If they cannot be detected by any sensory organ, calculated, or if there isn't any observable effect that their existence causes, I will still stand firmly to my belief that they do not exist.
I find it odd that you decide to put aliens in the same category as gods, spirits, and leprechauns. Life outside our solar system not only does exist, but mathematically proven. The very idea that we are the only intelligent life in the universe is not only highly arrogant, but ignorant. Placing your decision on whether or not to believe on video, audio, or by word of mouth while very prudent also provides a problem . How can any such evidence be substantiated, when no one wants to take this subject seriously?
I understand your skepticism, but don't write off life exists elsewhere just because you have decided there is no evidence.