A quick summary
of another work by the author of that work; snippets pertinent to this discussion follow:
"Modern teachings on mindfulness are almost exclusively derived from a peculiar 20th century interpretation of one text, the Pali Satipatthana Sutta. This doctrine, the vipassanavada, says that satipatthana is a practice of ‘dry insight’, where the meditator, without previous practice of tranquility meditation, is ‘mindful’ of the changing phenomena of experience. This alone is sufficient to realize enlightenment. When we carefully consider the range of teachings found in early Buddhist texts on mindfulness, it becomes clear that this doctrine does not hold up."
"Satipatthana is the ‘contemplation’ (anupassana) of body, feelings, mind, and principles (dhammas). ‘Anupassana’ means ‘sustained watching’. It is an awareness that stays on one thing and doesn’t jump from object to object. For this reason satipatthana is said to be the ‘way to convergence’, ekayana magga."
"The main practice of satipatthana is breath meditation, anapanasati. One focusses on the breath, keeping awareness there, continually ‘remembering’ the breath. As the physical breath becomes tranquil, one moves from body contemplation to the awareness of the subtle feelings of bliss and rapture that arise in the breath. The mind becomes purified. Finally one reflects on how the whole process is impermanent and conditioned; this is contemplation of dhammas (‘principles’). There are many other types of meditation that can be classified as satipatthana, but all of them follow a similar course."
"One of the additions is the inclusion of the awareness of postures and daily activities among its meditation exercizes. The awareness of postures is, in every other text, part of the preparation for meditation, not a kind of meditation itself."
"Another late addition to the Pali Satipatthana Sutta is a ‘refrain’ following each meditation, which says one practices contemplating ‘rise and fall’. This is a vipassana practice, which originally belonged to only the final of the four satipatthanas, contemplation of dhammas."
"Each version of the Satipatthana Sutta is based on a shared ancestor, which has been expanded in different ways by the schools. This process continued for several centuries following the Buddha’s death. Of the texts we have today, the closest to the ancestral version is that contained in the Pali Abhidhamma Vibhanga, if we leave aside the Abhidhammic elaborations."
"Tracing the development of texts on satipatthana in later Buddhism, there is a gradual tendency to emphasize the vipassana aspect at the expense of the samatha side. This happened across various schools, although there is some variation from text to text, and perhaps some differences in sectarian emphasis. This led to various contradictions and problems in interpretation."