As science advances as some describe it, into itself, - by creating technology which is then subsequently of a higher complexity than the ideas it is to help explain - complications often can arise, such as a need for higher education for those who utilise it. This may not be a negative complication in itself, but gives rise to another problem: that this causes education about the subject's fundamentals to be sacrificed for the training in the utilisation of ever changing technology.
Source: tatoeba (3219174)
The bodywork employs, where possible, the same constructional methods as for the standard B.R. coaching stock, in order to utilise existing jigs and press tools.
Source: wiktionary
Since then we have had the opportunity to travel in them and were much impressed by the internal styling and comfort of the seating (with the minor exception of the single seats which have been tucked in longitudinally alongside some of the entrance vestibules and which are so cramped that only the slimmest of female figures could be comfortable in them; the space they occupy would have been better utilised to increase standing room).
Source: wiktionary