Why does the class 'TD3Critic' have two Q-function estimater but only use one?

[G0K0URURI]

The class 'TD3Critic' seems to have two Q-function estimates, but only the first one is used. `class TD3Critic(nn.Module):

def __init__(self, state_dim, goal_dim, action_dim):
    super(TD3Critic, self).__init__()
    # Q1
    self.l1 = nn.Linear(state_dim + goal_dim + action_dim, 300)
    self.l2 = nn.Linear(300, 300)
    self.l3 = nn.Linear(300, 1)
    # Q2
    self.l4 = nn.Linear(state_dim + goal_dim + action_dim, 300)
    self.l5 = nn.Linear(300, 300)
    self.l6 = nn.Linear(300,  1)`

I guess you may forget to delete the second one while realizing the ensemble over Q-value models in the class 'TD3Controller' : )