Why can't we drink salt water? How is that an effective evolutionary strategy?
We should be able to readily drink either fresh or salt water
The naive question is usually something like "But if evolution gives us advantageous things, why can't we fly? Or shoot lasers from our eyes? Or have two hearts? Or fly?!" Natural selection has little to do with what you want, and everything to do with environmental pressures. The "pressure" in this case was all the tasty vegetables that were ripe for the grazing AWAY from the ocean. We also lost fins and the ability to survive underwater. Don't see you complaining about that.
It seems to me that your vision of evolution is some human-fish hybrid running up from the ocean, nomming some bushes, and then running back. That's not how it works. Changes took place over millions of years, in species that were completely cut off from the ocean. That's why we can't shoot lasers from our eyes.
But you'll admit that if evolution or Intelligent Designed worked as advertised, then we would be have evolved or developed the ability to safely process salt water for drinking.
What a HUGE design flaw!
"As advertised" is changing to any given environmental pressure that happens to be around, whether it's a long-term good or bad change. There are tons of design flaws in evolution. Only creationism claims there's some intelligence to it all. But looking at our genes, it's clear that we are not the product of some precisely engineered work of art. We're bits and pieces glued together over time.
There's nothing "intelligent" about it, from anatomy to cellular biology. Why do we need mitochondria, that started as a completely separate organism, as symbiotic organelles in every one of our cells if we were designed perfectly? Why do we have genetic diseases at all if not for evolution gone astray? What makes you think female armpit hair was designed? What do you think the term "vestigial" actually symbolizes?
Evolution has nothing to do with design. You still don't understand what evolution is, and yet you keep making these ignorant threads anyway.