Two days at Charité in Berlin
Two days at the dental department of Charité Medical College, a third Berlin visit in thirteen months, of which the surviving record is one hotel invoice and five photographs.

The paper trail for this one is thin. A single invoice from enjoy hotel Berlin City Messe on Rudolstädter Straße covers one night, room 109, 12 to 13 February 2019, made out to Tarry Singh in Assen. No deck, programme or attendance list is known to exist.
The host was the dental department of Charité Medical College. At 16:14 on 12 February the party was in Berlin's south west, a couple of hundred metres from the dental campus, inside a room of glass display cabinets built around a treatment chair from an earlier century. Tarry was there with a colleague, carrying the coffee.
Berlin was familiar ground by then. A talk in January 2018, a bioinformatics hackathon a month after that, and this, thirteen months on, at the city's university hospital. Dentistry put the work back where it had been going all year: radiographs, and what a network can read off them. Nine months later a dental model would be one of three medical cases presented on the main stage in Belgrade.
The rest of the trip: dinner in the city's south at 19:40, a tram after nine, then a train window and wet green fields the following afternoon. What was taught at Charité, and to whom, is not recorded, and it is not guessed at here.
Of the five frames from the trip, one is from the visit itself. The rest are the journey.