Alternatively, one may make the example a bit sharper by discussing a being, call him 'McStupid', that always knows who he is, but knows nothing else.

optimistic locking

Earth hosts (a) myriad animals.

The phænomena of the diſtillation of amber favour this opinion: It affords actually a ſort of naphtha, and a petroleum too, of a higher or a lighter brown colour, according to the degree of heat employed, and the length of time ſpent in the operation.