ahhh... the good old effect that nostalgia has on people...
after years and years of genetic diversity and domestic cultivation... we really have come a long way...
most landrace strains you see were still relatively potent(although you cannot see it in the photos) they still had plenty of resin and trichs... potency has only increased a small amount, say 5% ON AN AVERAGE at best on the many strains we have now today in comparison to the WHOLE...
so say there were only 10 strains back in the 70's which were very potent... there are now literally HUNDREDS of strains that are very potent...
thats the real difference...
and not some bs gubt lie saying this aint the weed your "daddies" smoked... bullshit...
we have controlled the domestication of cannabis much in the same way bananas, potatoes, apples, etc... you name it... same thing...
while more FORTUNATELY quantity and yield have gone up incredibly...