Here is another reason: When adults face a change, they can refer to their personal 'book of experience' to see how they dealt with similar situations in the past.
Lebaka le lengwe ke leno: Fa batho ba ba godileng ba lebana le diphetogo, ba ka akanya ka se se ileng sa ba diragalela mo nakong e e fetileng go bona gore ba ile ba lebana jang le boemo joo.