BY P. KANDIAH
The inconvenience of fitting and using a dust bag in a vacuum cleaner inspired Sir James Dyson (as he is referred to now) to develop a bag-less vacuum cleaner which innovation has brought much comfort to those tashed with vacuuming floors. Dyson’s bagless vacuum cleaner has taken the world by suprise.
Pharmaceutical firms do realise the inconvenience of requiring patients to take a pharma drug, three times a
