There are two reasons for this new nomenclature: simplicity and the avoidance of hurt feelings. The Greek-letter labelling proposed by the WHO is therefore an official attempt to provide the convenience of simple, uncontroversial monikers. As for the desire to avoid hurt feelings, some may consider it oversensitivity. Greek letters are often used as parts of scientific labels, which adds authority to the idea. The next letters on the list, if it comes to it, which it probably will, are epsilon, zeta, eta and theta.
Image copyright Google Image captionwords else of used healthcare institutions are big and fat.
( z0 and :domain ( z1 word :mod ( z2 else ) :part-of ( z3 institution :ARG1-of ( z4 use ) :mod ( z5 healthcare ) ) :source ( z6 company :name ( z7 name :op "Google" ) ) ) :op ( z8 big ) :op ( z9 fat :ARG1 z1 ) )
(z0 / and
    :domain (z1 / word
                :mod (z2 / else)
                :part-of (z3 / institution
                             :ARG1-of (z4 / use-01)
                             :mod (z5 / healthcare))
                :source (z6 / company
                            :name (z7 / name
                                      :op1 "Google")))
    :op1 (z8 / big)
    :op2 (z9 / fat-03
             :ARG1 z1))
Image copyright Google Image captionwords else of used healthcare institutions are big and fat .
z6 :name z7
z7 :op1 0
z1 :source z6
z1 :mod z2
z3 :mod z5
z3 :ARG1-of z4
z1 :part-of z3
z0 :op1 z8
z0 :domain z1
z0 :op2 z9
z9 :ARG1 z1