Poetic license means the ‘license’ or ‘liberty’ taken by a poet, prose writer, or other artist in deviating from facts and genre conventions etc. so as to be able to produce more interesting and/or effective artwork.
For instance, we know that we should follow poetic rhyming conventions and syllable and stanza counts but sometimes, the message is more important than the mode so, we take the liberty of scrapping some of the rules every once in a while (see: “Sun, Sand &”).
p.s.
Why not see this post too: ‘Poetic justice’
**** Standing on the shoulders of giants. This metaphor/phrase/idiom: ‘of dwarfs standing on the shoulders of giants’ (Latin: nanos gigantum humeris insidentes) means, discovering truth by building on previous discoveries. This idea/notion has been traced to the 12th c. and is attributed to Bernard of Chartres. Famously, in 1675, Isaac Newton wrote the following, “if I have seen further it is by standing on the shoulders of Giants.”
Anna Bidoonism 