The problem is that quantum effects are most prominent at small size scales, whereas general relativistic effects require large masses, so it takes extraordinary circumstances to combine both conditions.
The problem is that quantum effects are most prominent at small size scales, whereas general relativistic effects require large masses, so it takes extraordinary circumstances to combine both conditions.
问题在于，量子效应在小尺度最为明显，而广义相对论的效应却需要大质量才看得出来，因此两种状况的交集，必然是个非常特殊的环境。