“…On the other hand, it would be a folly not to use a more complex substitute if indicated. We also need to intensify research on the many important ongoing developments around the world (Bian et al 2011, Buehler et al 2004,Gould et al 1995, Hoffman et al 1990, Natanson et al 2008, Seetharama et al 2013, Sims et al 2001, Tam et al 1976, Wei et al 2013, Yabuki et al 1990, Yu et al 2010, Zhu et al 2007, Zhou et,al. 2013, Lui and Kluger 2010, Wong and Chang 2007, Bucci 2011, Chang 1957, Greenburg 2013, Sakai 2013, Wong 1988.…”