  We consider a conformally coupled scalar QFT on $2+1$ dimensional static
Einstein universe $R \times S^2$, and write down the free theory Hilbert space.
We explain that this theory is secretly a QFT in $2+1$ de Sitter space because
all the quantum observables experience {\it quantum revivals}, which naturally
restricts the timelike $R$ to the appropriate de Sitter time range. Our
construction circumvents the causal obstruction to formulating QFT in de Sitter
due to event horizons. There aren't any in static Einstein. The `unitary gauge'
description of the theory is realized by the zonal harmonics $P_\ell(\hat n
\cdot \hat n')$. We verify that interactions with conformally invariant
external sources are mediated only by these modes. Hence these modes comprise
the complete basis of the "bulk" theory. When the theory is cut off in the UV
the basis dimension scales as the Bekenstein-Hawking formula.
