The life on earth exists because it adapted to what ever the environment subjected it to from the beginning and it continues to change by way of evolution . Life as we know it could have been completely different if the earth was comprised of elements we are not aware of

Reality exists. Something that emerges from reality conforms to reality. Theist hides leap of faith by saying god must exist because only god can make reality, and were reality otherwise nothing could exist... yet never demonstrates any god exists.

Yeah, there are those who believe that everything (all the life) on earth could nothing have occurred simply by chance. Yet, if you consider the number of planets in the universe and the billions of years it took life to develop, it is entirely possible that it did.

Small minds will seek overly simplified solutions. However the universe is very complicated.

That is a religious concept, that gawd made this earth for us (Adam & Eve) exactly as we needed it. Far more likely we evolved to fit our surroundings. Get some new books & new friends!

Tuned? That sounds awfully like something in support of the Intelligent Design theory propounded by the Creationist lobby.

What a load of crap, all the living things on earth have evolved to thrive in the earth's environment, not the other way around.

"According to some, certain constants (like the value of the pull of gravity) in physics have to be exactly what they are to support life."

In creationist logic it's imperative to put the cart before the horse.

There are many things about the planet Earth that make it especially habitable for the kind of life that lives here. You may have heard something about that and misinterpreted it as "tuned for life". That phrase sounds like some bullshit that was invented by the intelligent design cult.

My bullshit meter says it's bunk, hogwash, nonsense.

the only thing that is "tuned" is our evolutionary development as it adapts to fit the existing environment

The orbit of the Earth swings further away from and closer to the sun then fundamentalist realize, the statement if we were an earth diameter closer or further from the sun we'd either burn up or freeze is overtly wrong.

Yeah, it's nonsense. Anyone who understands evolution can see how misguided this claim is.

Just like the Matrix???

I have heard it. It is like a puddle realizing it is in a hole in the ground and thinking that the hole was made especially for it, based on how well it fit. We don't know that things were finely tuned or if this was the only way that physics could have turned out a universe, or if/how many "failed" universes there were before ours came about. It is rather limited in it's view of "fine tuned" (don't even have to get into how much of the universe isn't fine tuned for human life, but you can). What if the constants had been different, would the life forms that evolved (if any) have been different? No idea, not sure we will ever be able to answer that. It is a bit of a hail mary to say "you don't know everything so how can you say I am wrong" with a bit of extra flare.

I've heard that, too.

Nah sounds like fringe science to me. Seriously doubt that would pass peer review.

WTF, IF this planet was 'tuned' for supporting life the WHY have there been so many Extinction events?
To my mind it sounds more the 'mechanic' was trying to make a a 4 cylinder car with an 1,600cc engine run like a V8 with a 6 litre engine and failed miserably.