Pixel Albert Einstein thinks best on a bicycle, and today the thought is a big one: do the clock on the town hall and the watch in his pocket really agree while he is moving fast? The only way to check is a Relativity Ride: pedalling across the whole old town and comparing every clock along the way.
The cobbled streets are busier than any equation. Trams rattle down the middle, horse carriages trot along at their own pace and the first motor cars honk at everything in sight. Pocket watches roll across the road, each one ticking a slightly different time. Collect them, keep pedalling and find out how far a good idea can travel.
