As a general principle, the Nineteen Day Feast and other official Bahá’í gatherings should be conducted in the conventional language spoken by the people of the locality. However, as social and economic conditions throughout the world continue to change, it is not unreasonable to assume that more and more people will be forced to migrate to urban centres, forming pockets of minorities, each with a distinct language, as can already be seen, for example, in the concentrations of Spanish-speaking populations in North America or of certain tribal populations in Africa. In such instances, when the Feast is decentralized, the question may well arise as to whether the programme can be conducted in the language spoken by the minority population most prevalent in a neighbourhood. At this stage, the House of Justice does not wish to lay down any hard and fast rules, and it is left to the discretion of the Local Spiritual Assembly concerned to decide, under the guidance of the National Spiritual Assembly, how to address the matter, approaching it with both flexibility and an attitude of learning.