A refined trans-Planckian censorship conjecture
  We propose a refined version of trans-Planckian censorship conjecture (TCC),
which could be elaborated from the strong scalar weak gravity conjecture
combined with some entropy bounds. In particular, no fine-tuning on the
inflation model-building is required in the refined TCC, and it automatically
passes the tests from those stringy examples that support the original TCC.
Furthermore, our refined TCC could be consistent with hilltop eternal
inflation.
