This narrow view has been
becoming overshadowed by genetic findings that
support the more recent hypothesis of complex roots, which emphasizes
lateral genetic exchanges or horizontal gene transfers (HGT) rather than vertical mutational progression in the development of nucleated organisms, through a clearly defined «tree of life» (Mark Buchanan, New Scientist, January 26, 2010).
With the bolsters inflated the seat had good
lateral support, by deflating the bolsters the seat
became easier for the driver to get in and out.