Which ancient product design innovation from around 700 BCE was so effective that its basic ergonomic principles remained virtually unchanged for over 2,500 years?

Throughout history, product design has evolved dramatically, responding to cultural needs, available materials, and technological capabilities. Ancient civilizations created surprisingly sophisticated products, many of which influenced designs we still use today. This poll explores how product design principles have historical roots that continue to shape modern consumer products. Test your knowledge about an ancient innovation that revolutionized its time!

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The Greek kline (reclining couch) with its ergonomic angles
The Etruscan/Greek ceramic amphora with its two-handled design for easy carrying
The Roman hypocaust underfloor heating system
The Egyptian shaduf water-lifting device