Mind Core Science on Instagram: "When stair steps are not the same height your walking rhythm breaks. Even a small difference of 1 cm makes you stumble because your legs expect the next step to match the last one. Many falls happen on stairs built with uneven step sizes. Building rules in most countries require equal rise and tread for this reason. Always check step height carefully during design and construction. Equal steps mean safe stairs. #knowledge #architecture #history #innovation #exper