When irreversibility is not too high Heat exchange may fluctuate. To make the bound tight The fluctuation theorem was the source. And in the end What we got was a TUR de force. About this #PoetRL Paper Title: Thermodynamic Uncertainty Relations from Exchange Fluctuation Theorems Authors: André M. Timpanaro, Giacomo Guarnieri, John Goold, and Gabriel T. Landi Reference: Phys. Rev. Lett. 123, 090604 – Published 30 August 2019 URL: https://doi.org/10.1103/PhysRevLett.123.090604 Poem by: gtlandi@gmail.com #PoetRL ID: ¶13