Survival of the Fittest Idea

From Eduwiki

The theory of knowledge that I wish to propose is a largely Darwinian theory of growth of knowledge... we try to solve our problems , and to obtain, by a process of elimination something approaching adequacy in our tentative solutions

Popper's idea is that, by using our current information, we determine a solution for a particular problem. Like Darwin's idea of "Survival of the fittest", only the best solutions will be implemented as only the most successful traits are passed over time. This is a utilitarian view of the learning: the solution that best satisfies the need is the only solution that is considered and matters to the whole. The most efficient forms of education are those that can show purpose and direction to benefit the learner. There is a conscious elimination of potential answers that don't allow for concrete thinking and solutions. As our physical environment is always changing, so is our educational environment. This change requires us to constantly adapt in order to follow the most successful path to "perfection".

"If what we already know is adequate enough to solve our problem or "survive," than why bother looking for other answers."-------> If what we already know is adequate to survival, then why do we have a natural tendency to grow and change? The nature of nature is to always look for "other answers". Taken that there's always change, is there really any way that we can solve all of our problems "adequately"?