I realize mushrooms aren't going to be like cannabis where there is a whole new industry blooming before our eyes, where the potency of cannabis flowers goes up yr by yr. Yet, I was beginning to wonder if the mushrooms of today are more potent than the ones Terrence Mckenna was using? Does one still need a full 5 dried grams to reach, worlds within worlds, in the same way one needs 3 tokes?

Im asking in general terms about the plants as whole, not getting into species where I know there can be worlds of differences. Are we better farmers, do we grow better stuff or have there always been 'x' amount of potency that(more or less) remains linear as time goes on?

They all serve the same purpose though. Some you just need more than others.

There are so many factors involved with each species. Some have more potency than others. Myself had grown some cubensis, golden teachers. Myself had 9 g dried to see the truth You were talking about. Weeks later myself was given golden teachers being a healer and had less than 3 grams and basically the same thing happened. In my search for healing myself was given another strain, not golden teachers and to my surprise 1 g was straight bad trip city. Myself does the mushrooms and heals my wife, meditates and goes outside for the truth. Like myself said to her, people are confusing mushrooms, peyote, magic truffles, dmt and 5 me0 for a hallucinogenic. They are medicine, potions from the earth grown to show us the truth. What we are seeing is the truth, not something made up from our mind. Lsd, that's man made and myself has not experience with man mad drugs. This time that 1 gram was the worst myself has ever done. Instantly, 10 minutes later myself looked at my wife and said myself has to get these out of me. Myself then got rid of the by vomiting. It instantly calmed them down but myself has exposed the shadow, this was different than any other trip. Myself knew this and for 4 hours myself had a battle with my actual shadow.Normally myself can put him to sleep and let my inner child escape but this time it was different. 5me0 was an amazing paradise dream compared to this mushroom truth. It all depends brother, we see what we are supposed to see.

Yes. Crossbreeding is possible with mycelium. And is being done.

Psycho active shrooms are not a very big busines, compared to cannabis. But there are proffesional growers out there. And they are constantly experimenting.