Undoubtedly, there needs to be a certain degree of arms proliferation in all countries in order to secure their borders from external or internal threats. However, when the military budget of countries like the USA, the world´s largest power, is far greater than the budget destined to meet other needs of the State, these latter ones are unavoidably neglected, to the detriment of the country´s people. On the other hand, if a greater budget is destined to the building of infrastructure, history shows —like in Japan and Germany— that the economy becomes less dependent on warfare and relies more on human capital and culture.
The question then becomes whether economic gain through arms proliferation is more advantageous to the welfare of the people or if the wellbeing of the people —through the building of infrastructure— is more beneficial to any given government. Since the wellbeing of the people is, in principle —based on the International Bill of Human Rights—, the aim of all countries, these should be more preoccupied with the building of infrastructure.
The answer to this question is a Levirate marriage. A Levirate marriage is a type of custom where in the brother of a deceased man is obligated to marry the wife of his deceased brother. This is said to be a compulsory marriage. This marriage is required by the Hebrew ancient law.
Well a physical property you could measure could be boiling point which would mean the temperature before melting. All you would have to do is keep turning up the temperature until it starts melting.
