Current observations indicate that γ γ − − 1 = ( 2.1 ± ± 2.3 ) × × 10 − − 5 , which means that ω ω 0 > 40000 . Although explaining such a value in the context of the original Brans–Dicke theory is impossible, Damour and Nordtvedt found that the field equations of the general theory often lead to an evolution of the function ω ω toward infinity during the evolution of the universe. Hence, according to them, the current high value of the function ω ω could be a simple consequence of the evolution of the universe.