Rescher, N., Luck: the brilliant randomness of everyday life p. 32. „Luck accordingly involves three things: (1) a beneficiary or maleficiary, (2) a development that is benign (positive) or malign (negative) from the stand point of the interests of the affected individual, and that, moreover, (3) is fortuitous (unexpected, chancy, unforeseeable.)”.
Rescher, N., Luck: the brilliant randomness of everyday life p. 32. „Luck thus always incorporates a normative element of good or bad: someone must be affected positively or negatively by an event before its realization can properly be called lucky.”.
Elbow Room by Daniel Clement Dennett, p. 92. „We know it would be superstitious to believe that „there actually is such a thing as luck” – something a rabbits’ foot might bring – but we nevertheless think there is an unsuperstitious and unmisleading way of characterising events and properties as merely lucky.”.
CHANCE News 4.15 ...the definition in the Oxford English dictionary: „the fortuitous happening of an event favorable or unfavorable to the interest of a person”.