With intense labor, much of the mind's resources are diverted towards thinking about one's actions, with less time built into various abstract structures.
However, one does still see various abstract representations, but much more of the thought ends up being absorbed into the labor itself.
On top of this, one is so exhausted at the end of an 8-12 hour day of intensive physical labor that the mind essentially shuts off. All one can do is rest.
This is partially how a class system structures itself spontaneously, but this structure also implies great mass and interconnection. A weekly 8-12 hour working day is only necessary if one needs to produce a large amount of food, so as to maintain an economic structure that requires constant expansion, stratification, and wealth polarization, among other things. In this instance, class has to develop out of this constantly increasing volume, complexity, and labor structure.
And I'm still adjusting to the work week, so there is more to explore here as well.
