1900 introductions

thumb|Escalator in a Centrum Nauki Kopernik metro station|metro station in [[Warsaw]] thumb|Rows of escalators at the World Trade Center in Dubai thumb|thumbtime=3|Fujitec escalator in action, 2020 thumb|Escalator maintenance test run thumb|upright|Escalators at the Christ the Redeemer (statue)|Christ the Redeemer statue in [[Rio de Janeiro, Brazil]]

economic theory that asset prices fully reflect all available information, so that it is impossible to "beat the market" consistently on a risk-adjusted basis

type of American salad dressing

syllabary writing system

rose cultivar