"The burial of Popper took place in London. He is in fact, buried in London." Apparently not, even aside from whether the Croydon area is regarded as "in London": "After cremation, his ashes were taken to Vienna and buried at Lainzer cemetery adjacent to the ORF Centre, where his wife Josefine Anna Henninger had already been buried."[21 - http://en.wikipedia.org/wiki/Karl_Popper Btw, while asserting 'x' may be equivalent for some purposes to 'It is asserted 'x'', that would not mean 'x' is equivalent to or entails 'It may be observed that 'x'', certainly not in the sense where 'observability' is a measure of the scientific status of a claim. Otherwise every claim 'x' would, ipso facto, be a scientific claim. Whatever Ross said, it does not bear on the difference between asserting 'x' and asserting 'x is observable'; still less does it bear on whether classifying something as 'scientific-because-observable' is a matter of classification that is itself testable by observation. Donal