The interdimensional hypothesis (IDH or IH), is an idea advanced by Ufologists such as Jacques Vallée that says unidentified flying objects (UFOs) and related events involve visitations from other "realities" or "dimensions" that coexist separately alongside our own. It is an alternative to the extraterrestrial hypothesis (ETH).

Based on the paragraph above can we conclude that " The interdimensional hypothesis (IDH or IH), is a nice idea advanced by Ufologists such as Jacques Vallée."?
It's impossible to say