what if i set load_check point to true from argparser

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If i set the value of load_checkpoint to True from argparser, how would the if statement work in line 95 of main.py?
if not args.load_checkpoint:
agent.store_transition(observation, action, reward, observation_, int(done))
agent.learn()
I think the agent wont be able to store the (state, action, reward, state_, done) in replay buffer and the agent wont learn either, won't it?