Answer by
LeheckaG (1826)
Birkenstock shoes have been around since 1774 in Germany.
You probably saw a photo of Albert Einstein wearing sandals,
but Karl Birkenstock's sandals did not introduce the popular Birkenstock sandals until 1964-1967.
Albert Einstein died in 1955, so the sandals he was wearing were probably not Birkenstock's.
Sandals date back 10,000 years.