Why Has Evolution Not Taken Care of the Need for Glasses and How Did our Early Ancestors Survive?
Evolution is not survival of the perfect but survival of those who survive. Humans developed tool making skills. A nearsighted person who could produce a good spear point was as valuable as an eagle eyed person without a weapon.
The Short Answer
Evolution is not survival of the perfect but survival of those who survive. Humans developed tool making skills. A nearsighted person who could produce a good spear point was as valuable as an eagle eyed person without a weapon. Natural selection does not actually cull all deficient genes. There is so much genetic material some perfectly useless stuff gets passed on. Until writing and sewing came along the need for perfect vision was not that great.
Analysis
Key Concepts: Survival, perfect, person
This explanation focuses on survival, perfect, person and spans 76 words across 6 sentences. The depth is typical for Biology questions (category average: 72 words), striking a balance between accessibility and completeness.
What This Answer Covers
The explanation opens with: “Evolution is not survival of the perfect but survival of those who survive.” It then elaborates by presenting a contrasting perspective, ultimately building toward a complete picture across 6 connected points.
How This Compares in Biology
Ranked #202 of 500 Biology questions by answer depth (top 41%). This falls in the detailed tier — above average depth. The explanation goes beyond surface-level but keeps things accessible.
Frequently Asked Questions
Is there a simple explanation for why evolution not taken care of the need for glasses and how did our early ancestors survive?
Evolution is not survival of the perfect but survival of those who survive. Humans developed tool making skills. A nearsighted person who could produce a good spear point was as valuable as an eagle eyed person without a weapon. Natural selection…
How detailed is this explanation compared to similar Biology questions?
This is an above-average answer at 76 words, ranked #202 of 500 Biology questions by depth. The key concepts covered are survival, perfect, person.
What approach does this answer take to explain evolution not taken care of the need for glasses and how did?
The explanation uses contrasting perspectives across 76 words. It is categorized under Biology and addresses the question through 1 analytical lens.