Crocodiles the world over are becoming larger. That doesn’t mean the average size is larger, it means that individual crocodiles are growing bigger than they used to. Monster crocs are being reported wherever the creatures live. Whatever the cause, they’re getting more to eat these days.
The Indonesian island of Flores used to be home to now extinct giant rats and tiny elephants, along with the pygmy human remains, nicknamed the “Hobbit” people. All of these creatures gained or lost size due to the available food supply. The rats apparently found it easy living there, while the elephants on the island needed to downsize to the limited vegetation. Likewise the humans, who scientists think were descended from a much larger human ancestor.
The single most powerful driving force behind evolution is the food supply. The giant predators preyed on giant herbivores, and when the herbivores died out, so did the predators. If an animal eats only one kind of plant and that plant goes extinct, so does the animal that fed on it, and when more people are eating the food supply than that food supply can sustain, things happen. Things like famine and then the spread of disease from all the dead bodies laying around, which reduces the population, or eating the food supply until it goes extinct and then everyone dies. This used to be the way of it, in the past, but now things have changed.
Our population would have already long outstripped the available food supply if it weren’t for modern science applied to food production. Our food has less nutritional value as we keep increasing production, but it still keeps the growing population fed, and our population definitely is growing, a lot.
So what happens to evolution if we neither push the food supply into extinction nor have a famine? The food supply itself is going to be diminished, most likely food will be rationed just like it is in wars. This means less food for each of us, and that means obesity will decline to pretty much zero. Competition for the best quality protein is bound to become the norm, and the less protein someone needs because of their size, the greater their chances of survival. Small people will have a definite food advantage, as well as a mating advantage. Those who need less protein will do better on the limited food rations, and smaller couples will eat much better than large couples.
Right now it pays to be a tall human, tallness is admired, tall people get more respect. But when being tall means you need more food and that food is limited in supply, being tall will become a serious disadvantage. Only the elite will be able to afford to be tall.
In Feudal Japan, it was the tallest of the Japanese who were considered the best warriors. The little short guys were left on the farm to hoe the cabbage fields. Eventually, all the tall Japs were killed off in battles and only short ones were left to make babies. It’s only since WWII ended and the Japs swore off making war that they’ve started to grow some tall ones again. There’s a lesson in that.
We’re going to have to get used to being crowded together even more than we are now, and there’s going to be some interesting legal battles ahead over what constitutes private space. The Japs live with their whole families in one room now and Mexicans here do the same thing. In fact, two or three Mexican families get together to buy one house here and they all live in it, with one family per bedroom and all sharing the kitchen. Apartment living in the cities is going to become a lot more crowded than it is now. In many cities, entire blocks of private homes have been replaced with multi-story apartment complexes and this trend will continue. Private homes will become a luxury, and increasingly targets for burglars and home invasions.
War. War being started among the superpowers of the world is increasingly unlikely. The Chinese intend to dominate those around them as much as possible through intimidation and manipulation, they don’t want a war that would wipe out their prosperity. Likewise with Russia and other Euro nations, and the poor ones can’t afford to have a war even if they wanted one. We certainly don’t want one, the small wars we’ve had lately were just to benefit our arms industry. None of the major nations wants an attack on their own soil.
However, the Muslims want war. Islam is a sort of international nation, much like the Jews were before they created Israel, and the Muslims want a world war. They want it a lot and I’m pretty sure they’re going to have it, because they want the world to become all Islamic with everyone under the heel of some Muslim dictator. There’s a number of ways they can go about starting this war. Their two main factions, Shiite and Sunnite, hate each other and war could break out between them. This would interfere with the production of oil which is needed to produce and transport food globally, and result in Western interference to protect the oil flow. From there it would turn into a competition to see who gets the most control and soon the Euro nations would be fighting with each other, using Mideast soil as their battlegrounds. The world runs on oil and we are all willing to fight for it.
Eventually, we are all either going to be a dying race of really small Muslims who eat sand, or we’re going to be worshiping a brand-new god called Protein and executing people who have children without permission. There will be ghettos where outside people don’t dare to enter, where cannibalism is a common practice and babies are a welcome source of food. There will be large compounds guarded by sensor-operated automatic weapons where communities grow food and live in the sunlight and plan for a better future. All the zombie movies popular right now might actually be prophetic.
Who knows? Some things are certain but the rest is just a guess. Personally I think those damned crocodiles are going to eat us all.