@tb1570 Thanks for your recent comment. It’s a great comment, first off, and you do raise some interesting points which I will address in a more broken down format.
Regarding the fact that we cannot see the wall: This is true. However, we are capable of making tools that can compensate for our flaws. For example, consider the electromagnetic spectrum. Humans can only directly perceive a very small fragment of this spectrum. However, we have created tools that let us indirectly perceive the remainder of the spectrum. Humans, unlike sharks, have proved that we have the capacity to develop beyond our limitations. It is not unreasonable to think that we could create other tools as we encounter the question after the next one.
You get into an interesting point about the limitations of our brains. However, we are continuously “exceeding our original programming”, whether it’s our brains or our bodies. For instance, humans have a very hard time conceptualizing truly large and truly small numbers, such as the size of the universe, or the sheer tininess of a proton. Our brains simply weren’t built to understand large or small scale numbers. After all, it serves no purpose when we live on Earth and our only goals are to live until we are able to produce offspring and consume any nutrient. However, despite this limitation, scientists still do deal with large and small numbers. We have developed tools that help us with it. Mathematics is one such tool. Unit powers is another. And this is not something that evolution has caused us to develop, we have developed it ourselves, such that even the basic principles of mathematics (adding, dividing) are known to virtually every first and second world person. This is essentially forced evolution: we are forcing our children to gain knowledge that will give then an advantage. This is also known as culture. It’s much more effective than natural selection when it comes to passing down valuable rules and information, but can lead to passing down non-valuable information too. Regardless, it is a clear example which I feel disproves your point about the limitations of our brains.
Regarding the fact that great white sharks cannot count: and as a sidenote, there have been some studies to show that some aquatic creatures, namely dolphins can in fact understand basic mathematics. You might have wanted to use dolphins in your example as they are generally accepted to be the closest to “sea humans” in terms of intelligence, self-awareness, etc. Yes, if we gave great white sharks nuclear submarines, they would not know what to do with them. However, if great white sharks had evolved such that they themselves had created the nuclear submarine, they would certainly have the capability to understand them as they created them. But comparing a sea animal to a land animal is totally different and not really worthy of comparison, because we have different needs and live in totally different environments, thus totally different patterns of evolution are followed. What is helpful to our ancestors (standing upright, so as to leave our hands free for manipulating tools) is not necessarily helpful to an aquatic creature (the aquatic creature doesn’t need to wield tools as it has tools built into itself (tusks, poison), thus no need for appendages, and appendages really are one of the fundamental reasons why humans amongst all other animals evolved to where we are now). Then again, aquatic creatures have developed some of the most interesting attack, defense, camouflage, and all other mechanisms to ensure their survival (such as how whales gain nutrients by filtering sea water through their filters, thus effectively eating while also moving and doing other tasks). Given a few more thousand million years, could dolphins have evolved to become an aware, sentient species such as humans? Possibly.