[LIConFem]

"...feels emotionally threatened by the idea that unnmanned missions are infinitely more cost-effective."

Since when is "cost-effective" one of the main goals of science and exploration?

[Strategerist]

The "bottom line" was a constant focus and concern of the great age of exploration that people constantly refer to; Columbus, Hudson, etc.; exploration for exploration's sake is a very recent phenomenon of the 19th and 20th centuries (Perry going to the Pole, etc.)