Ken decided to try something more drastic out. As this thing was rather powerful, there shouldn't be any limits to how drastic of a change it could cause. It does contain the laws of the universe in it.
So Ken got to work, writing out each idea he had and rewriting history too. He wanted to go big with this change and he wanted to change humanity, more specifically by making them feral and more wild.
In simple terms, humans would be pack animals. They will still be able to walk bipedal, but they won't be intelligent creatures. They will be driven by simple impulses, that don't require higher brain functions.
Hunans will be naked, sleep on the ground or in trees and defecate where ever they want. The human behaviour will be natural survival instincts such as hunting and sleeping, but when they don't have to do anything else, they will simply enjoy having sex. The human body gets huge amounts of pleasure from sex, far greater then any other species in the world. The pleasure will be so great that they will lose control of all other muscles in their body and spasm for a few minutes from an orgasm. It will take atleast three hours for humans to be able to move again from a single session of sex, which makes them vulnerable to other species. Sex isn't just a sign of mating or enjoyment, it's also how someone asserts dominance in packs. The alpha of the pack, regardless of gender, is the one who lasts the longest without orgasming. This means that it isn't uncommon to see two of the same gender having intercourse with each other.
The physical changes for humans is a lot more body hair, for both men and women. As they are naked for their entire lives, they developed more body hair to keep warm. Both males and females have developed larger muscles as a sign or being Alex predators and capable of hunting. This also includes sharper teeth and nails so they can rip flesh. As another inclusion, the average lifespan of a human is 30 years and they become full adults in only 3 years.
Due to how sexually active humans are, their genetalia has evolved differently. Men now possess larger testicles and penises, as a sign of being a good mate, while women have larger breasts as a sign of being fertile. Pregnancies are quite common, due to how common sex is. The time for a baby to develop in the room in now much shorter, only taking 3 months instead of 9 months. It also isn't uncommon for twins and triplets to be born, which makes up 90% of births in the world. As another side effect of these more common pregnancies, women develop larger mammary glands to supply enough milk to their offspring.
As for the history of the world, a lot of it is a mystery. At some point in the past, an event caused humans to revert back to a wild and feral way, while causing then to be more sexually active. A lot of human architecture still remains and is overgrown with plants and fauna.
In some parts of the world, cities still function. This us because before humans reverted to a feral existence, they created humanoid robots to perform tasks and jobs. These robots look like normal humans on the exterior but inside them is mechanical parts. They look identical to humans, but their mouths don't move when they talk and their skin is made of a synthetic rubber.
In the modern day, these robots don't even realise that they are robots, and believe that they are humans. They will make connections, dress in clothes and act like humans used to act. Whenever they are in the presence of actual humans, they will only see them as apes, and if they see anything that reveals that they aren't human, such as mechanical parts, a code in their brain won't let them bring attention to it. If they are damaged, the robots will go to a shop that repairs them, ut they will forget the experience of being repaired once they leave.
With the changes now written, Ken waited for them to take effect.