Ok for the last time evelution is a term used to decribe the effect of natural selection over time. Natural selection happenes every mateing season when the female will chose the most sutable (and most genectily fit) male to mate with, that isnt evelution but if this happens over a number of years and is coupled with mutation, immergration or any other mechanism of evelution then it will result in evelution, any other use of the term, no matter how popular it is, is incorrect.

As for the hacking at you lungs with a razor blade i never said any such thing, i said smoking killing healthy cells and allowing them to grow back is like say cutting your arm, ie killing healthy cells so that they can grow back, seems very simmilar if you ask me.

And as for those links i wouldnt call them credible sources, if i looked how many sites do you think i could find that say wedd give you cancer, 60 years ago they thought one drag would make you go crazy.

Lastly there are very few lung cancers directly associated with smoking tobbaco, it doesnt matter how much weed you have smoked in your lifetime, if you have ever had a drag of a cig theres a chance you could have got cancer from that so they cant say it is from the weed as there is doubt there.

And i recognise there are a lot of people in this forum that no almost nothing about cancer/the human body ect so i am trying to make it as simple as possible. If i had the time i could write pages and pages on this sort of stuff. So please dont question my inteligance when all i did was simplify my answer for the benifits of others.