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Even a Stage Ladder could be harmful if good sense is not utilized. There are 160,000 documented injuries every 12 months from ladders, many would be because of lack of safety and precautions.
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Many accidents take place by means of incorrect use of a ladders, or men and women wanting to use a seat, stool or several other object to just function at height.

2016年7月18日 (月) 20:25時点における版

Many accidents take place by means of incorrect use of a ladders, or men and women wanting to use a seat, stool or several other object to just function at height.