def calculate_belief(learned, time_delta):
    """
    How much should we believe in learned, given the amount of time that
    has passed?
    """

    return exp(-1 * time_delta * (learned - 1) / belief_factor)
dataset/ETHPy150Open heiskr/sagefy/server/modules/sequencer/formulas.py/calculate_belief/swapped operands of `-`