![People who constantly force religious beliefs... [500x559 - 45KB]](https://pic8.co/sh/3EiFd9.png){kind=link}
Because a scientific study of nature yields no evidence of any god, only of natural laws. Natural selection itself is just obvious - what works outlasts what doesn't work. No god needed for that.
Your faith in science is misplaced scientific study doesn't provide a logical reason why maximum pressure rise and mechanical leverage ALWAYS happens at 14 degrees after top dead center in an internal combustion engine regardless if it's rotary or reciprocating. There is NO explanation or theory that can explain why.
Natural selection is not obvious, an ecosystem is a complex web of variables, what works in one instance may not work in another. Natural selection is too slow a process to explain the adaptability of different sub species of the same animal.
Real reality is too far beyond your perception, but by indulging atheism you can claim to have all the answers, despite overwhelming evidence to the contrary.
This is not to say that one should not even try because the reality is too far beyond you. No, I'm not saying that at all, the universe gives us every opportunity to discover its mysteries and it's given us the tools to try to make sense of all this. It is an imperfect process full of mistakes and errors, and in that process you slowly increase the resolution of the truth. This is growth, this is what drives us, therefore it is correct. It is a journey, the atheist only sees the destination.
Atheists don't claim to have any more answers than we have evidence for. Not sure if your thing about engines is even true, feel free to prove it.
Just because an ecosystem is complex doesn't mean it's not built from simple rules. Selective removal of bad genes and spread of good genes has been observed in nature, as have new mutations. Natural selection is not that complicated in and of itself, nor is it a particularly slow process. It takes about 40 generations of selective pressure to turn a completely wild species of mammal into a completely domesticated species of mammal. That takes a significant change in both the genes and epigenetics of that population but it can be done within a few dozen generations with a high enough rate of birth and selective pressure. The norm in nature is a high birth rate and death rate, almost all species have higher rates of birth and death than modern humans, and the higher the rate of birth and death, the faster selection works.
For reference, 40 generations is roughly 1000 human years. 1000 years of Romans was the difference between savage European barbarian tribes and the race that circumnavigated the globe first. There's about 30,000 years of natural evolution between Eurasians, Africans, and Native Americans, at least 10,000 years between different major Eurasian groups, and a few thousand years between different European nationalities, plenty of time to explain the amount of differentiation between different racial and ethnic groups within humanity.
Not sure if your thing about engines is even true, feel free to prove it.
Google is your friend.
Just because an ecosystem is complex doesn't mean it's not built from simple rules.
It also doesn't mean those simple rules will create simple or expected results. Moving a vortex shedding from a wing tip .5mm inboard can mean the difference from an aero device on the other side of the vehicle working properly or not.
The norm in nature is a high birth rate and death rate, almost all species have higher rates of birth and death than modern humans, and the higher the rate of birth and death, the faster selection works.
That's not true though. The fruit fly lives two weeks and hasn't physically evolved in 5 million years give or take.
There's about 30,000 years of natural evolution between Eurasians, Africans, and Native Americans, at least 10,000 years between different major Eurasian groups, and a few thousand years between different European nationalities, plenty of time to explain the amount of differentiation between different racial and ethnic groups within humanity.
You mean forced race mixing due to war?
https://www.hotrod.com/articles/ignition-timing-free-hp-heres-get/
It's generally acknowledged that peak cylinder pressure needs to occur at roughly 15-18 degrees After Top Dead Center in order to maximize leverage on the crankshaft.
http://www.contactmagazine.com/Issue54/EngineBasics.html
There is another factor that engineers look for to quantify combustion. It is called "location of peak pressure (LPP)." It is measured by an in-cylinder pressure transducer. Ideally, the LPP should occur at 14 degrees after top dead center. Depending on the chamber design and the burn rate, if one would initiate the spark at its optimum timing (20 degrees BTDC, for example) the burn would progress through the chamber and reach LPP, or peak pressure at 14 degrees after top dead center. LPP is a mechanical factor just as an engine is a mechanical device. The piston can only go up and down so fast. If you peak the pressure too soon or too late in the cycle, you won't have optimum work. Therefore, LPP is always 14 degrees ATDC for any engine.
https://www.comeanddriveit.com/engine/detonation-and-knock
Ideally, you want peak cylinder pressure to occur between 14 18° ATDC to maximize the mechanical leverage of the rod and crank positions.
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