Spiny Norman wrote:I think it's a partly a question of how we're using terminology
this is true.
Spiny Norman wrote:but practically speaking I find that greater stillness ( samatha ) inevitably involves greater clarity ( vipassana ).
For me very simplified, vipassana is seeing the 3 characteristics in the 5 aggregates. And I cannot see how increasing samatha while focusing on a mental image in the Kasina meditation is able to develop that. Both Analayo and Gunaratana argue that samadhi, which is very closely linked to samatha, as concentration is exclusive in focusing on one object. While sati, as a supporting factor of samadhi and being itself supported by it, has a broader focus which Analayo calls "to be aware of variety". And only this awareness of variety let's one see the continuous arising and passing away of the aggregrates. Therefore in the sutta on the development (bhavana) of concentration (samadhi) the Buddha says:
And what is the development of concentration that, when developed & pursued, leads to the ending of the effluents? There is the case where a monk remains focused on arising & falling away with reference to the five clinging-aggregates. (http://www.accesstoinsight.org/tipitaka ... .than.html
Analyo continues to point out that deep concentration is an impediment to the awaress of variety - the 5 aggregates and their characteristics. Satipatthana is more a process meditation rather than an object meditation like Kasina etc.