Looking great brother! Those are some of the healthiest seedlings I've ever seen. You know they are thriving when those initial seed pop leaves stay vibrantly healthy like yours are :)
They definitely do grow fast, especially once they develop two or three nodes.
I don't stress thinning out the crop, and agree with the logic of growing more than intended to grow. I shouldn't have bragged about my high germination success rate because I only have 4 popped out of 12, and at this point they should be all sprouted I think, so I might even need to plant more, which sets me back some. I haven't decided yet. 4 is not very many and the odds of 4 females are probably low, (despite my last lucky grow)
I have all different kinds of ideas when it comes to this topic of plants feeling pain. I know we think they don't but idk.. sometimes I think they do, but that it's only significant when they are fully grown and have a developed root system. Maybe the way they feel it is different and there is no comprehension because they have no brain, I really don't know. Science says no, but science is never settled, or it's not science, right? :D (Unless a process can be repeated enough times with the same results. but there could be other aspects of the science that are still not fully understood or discovered.)
That doesn't stop us from popping tomatoes of the vine and eating them... What about lettuce...? those things suffer a brutal death when we consume, and so many other raw vegetables of course. We just have to put things into perspective.
If it's too bothersome for a person to kill a seedling once in a while for the greater good, they will certainly struggle with growing cannabis :D
Great post bro, and congrats on the well deserved Curie!
RE: They grow so fast, don't they?