As shitty as it is, this country 1. Isn't designed in such a way that would allow a third-party candidate a genuine chance of winning and 2. Has too many centrists that will vote for Biden regardless. Trump has repeatedly garnered heavy support in Republican polls, so they're pretty much almost all in on him. Splitting the blue vote between Biden and whoever else will only lead to a Trump victory after which we might not even be ABLE to vote in 2028.
I'm legitimately having a panic attack. These airheaded anarcho-kiddies are genuinely going to land us all in camps.
biden's doing literally nothing to stop states from criminalizing lgbt people's existence 
their fears about a trump presidency are valid but i wish these libs would stop putting their hopes in the DNC when its clear they have zero interest in running a candidate that isn't complete dogshit
Capitalist development (i.e. investment in equipment and materials) is where the tendency for the rate of profit to fall comes from; as the amount of fixed capital increases in the system (machines, infrastructure, education, etc) the less labor is needed to produce the same quantity of commodities. As labor is the source of all value, reducing the labor inputs actually reduces the value of the physical output of the system.
Underdevelopment is a tactic whereby this process is undercut by deploying counteracting factors to reduce the rate at which profit falls, chiefly superexploitation of the workers and immiseration of the population. Instead of investing in fixed capital to extract resources and reduce the need for human labor (i.e. development), imperialism sidesteps the problem by using military and police instead.
Within the imperial core the tendency of the rate of profit to fall is also counteracted because the resource colony cheapens the elements of constant capital, industrial inputs, and consumer goods. Even better, underdevelopment increases migration away from imperialized nations towards the core, increasing the surplus army of labor and allowing for the creation of internal colonies of superexploited workers within the imperial core itself! This allows for further capitalist development within the imperial core without reducing the rate of profit because, while labor inputs decrease for the core workers, they remain constant or increase for imperialized workers.
... at least, that's as much as I understand. Still need to read more theory.