The ledger everyone reads
You wrote it, then you asked. Which promise did the answer you got keep, and which one did it break?
One ledger is appended to all evening, and three boards on the wall copy it at their own pace. Each question is answered from the nearest board, so the answer depends on how far that board has read. The middle panel shows each board's position, and the counter tallies the promises those answers break.
Twenty fixed moments, one ledger and three boards that read it at their own offsets. Step through them one at a time.
try this Drag Moments the boards run behind the ledger to 3, press Play next moment through the evening, and watch promises broken.
Included with a plan
This lab is included with a plan. The first three lessons of every track are free, with their boards and videos. A plan unlocks every lesson, board, video, lab and paper for one price.
see also Dynamo: Amazon's Highly Available Key-value Store, Spanner: Google's Globally-Distributed Database, Brewer's Conjecture and the Feasibility of Consistent, Available, Partition-Tolerant Web Services and Zanzibar: Google's Consistent, Global Authorization System in Papers.