Correction: The "Great Southern Brood" (Brood XIX) emerges every 13 years, not 17.jtbell said:Following up on my cicada a few posts back, here's a cicada nymph that has emerged from its 17 years underground and is apparently preparing to "hatch" into a mature cicada.
Yeah. The optical design software I trained with had a setting that would optimise for designs that were resistant to mis-alignment (it preferred wide peaks in the merit function when optimising, basically). The guy who taught the course described it as the "binoculars for squaddies" setting. I reckon "lion resistant cameras" might be a better phrase, though.berkeman said:
We should definitely skip fish who are navigating and only east those who are at west.symbolipoint said:If that about the fish navigating is true, must we stop easting fish?
These remarks I made about the goldfish learning to navigate are because they seem to be more intelligent than we may have given them credit for being, and that maybe such animals should not be eaten, because of ethics in how we should treat intelligent and sensitive animals.renormalize said:We should definitely skip fish who are navigating and only east those who are at west.
What about salmon? They navigate.symbolipoint said:These remarks I made about the goldfish learning to navigate are because they seem to be more intelligent than we may have given them credit for being, and that maybe such animals should not be eaten, because of ethics in how we should treat intelligent and sensitive animals.
Two species occur on everybody's dinner card whether they navigate or not: fish and mice. If you're a fish or a mouse then you've drawn the *** card as we say here. (Probably because football referees usually have the red card that sends players off the pitch in their back pockets.)BillTre said:What about salmon? They navigate.
Navigation is a general animal ability. The goldfish is just doing it in an unlikely manner.
Could they learn to do so if in a fish bowl equipped with the kind of technology that the gold fish were using in the video? If so, then, I would become very poorly justified to eat salmon.BillTre said:What about salmon? They navigate.
Navigation is a general animal ability. The goldfish is just doing it in an unlikely manner.
A friend of mine has put it this way: "Imagine what they [dogs] have given up [evolutionary]!"berkeman said:
Very romantic, but the truth is, that what they 'gave up' was apparently almost-extinction.fresh_42 said:A friend of mine has put it this way: "Imagine what they [dogs] have given up [evolutionary]!"