The memoir *A Movable Feast*, written by Ernest Hemingway, was published in 1964 and popularized the use of the expression as an idiom. There is little agreement as to what the idiom a movable feast actually means. One definition of a movable feast is of something that changes over time. Another definition is something that nourishes your soul, but is transitory. Yet a third definition is something special that one stumbles across. The term movable feast is also sometimes used in a humorous manner to mean a picnic or a progressive dinner. The plural form of movable feast is movable feasts.

Flourish is a data visualisation site with a free plan that enables you to embbed your chart to your website. The following example shows the number of passanger cars per 1000 inhabitants in selected European countries. Passanger cars: “Road motor vehicle, other than a moped or a motor cycle, intended for the carriage of passengers and designed to seat no more than nine persons (including the driver).” (Eurostat Glossary) Data are downloadable from the Eurostat. Countries are grouped into two categories: Visegrad countries (V4) and non-Visegrad countries (NV4). One can filter groups interactivelly by clicking to group legends.

“Miller columns (also known as cascading lists) are a browsing/visualization technique that can be applied to tree structures. The columns allow multiple levels of the hierarchy to be open at once, and provide a visual representation of the current location. It is closely related to techniques used earlier in the Smalltalk browser, but was independently invented by Mark S. Miller in 1980 at Yale University. The technique was then used at Project Xanadu, Datapoint, and NeXT.” (Wikipedia)