The Evolution and Inconsistency of English Spelling

English spelling is highly inconsistent, as evidenced by words like "sew" and "new" which do not rhyme, and the various pronunciations of the letter combination "ough" (e.g., "thought", "tough", "through").
Unlike languages with consistent phonetic rules like Italian, Spanish, or German, English orthography is described in Greg Brooks’s Dictionary of the British English Spelling System ( $2015$ ), which spans more than $450$ pages due to the sheer volume of sound-to-letter variations.

The "messy history" of English began with Anglo-Saxon tribes in the $5^{th}$ century, followed by Old Norse via Viking invasions in the $8^{th}$ century.
The Norman Conquest in $1066$ introduced a major French linguistic influence; the lack of a centralized language Academy resulted in English haphazardly incorporating Germanic, Romance, and Celtic elements.
Following the conquest, written English largely disappeared for approximately $300$ years as French became the language of the state and Latin remained the language of the Church.
When English returned as a written language in the $14^{th}$ century, it relied on French vocabulary to fill official gaps, leading to the adoption of words such as $govern$, $judge$, $money$, and $contract$.

Early alphabetic writing (starting in the $600$ s) was largely phonetic and consistent, managed by dedicated scribes.
The arrival of the printing press (—invented by Johannes Gutenberg $c1450$ ) caught English while its norms were unstable.
William Caxton established the first English press in $1476$ . His typesetters, some of whom were from the Continent, prioritized speed and efficiency, establishing habits like the $gh$ in $ghost$ (influenced by Flemish-trained compositors).
Visual patterns entrenched certain spellings; for example, $could$ acquired an "l" to match $would$ and $should$, despite the "l" never being pronounced in $could$.

While printing was stabilizing spelling habits, English underwent the Great Vowel Shift, a period where pronunciations changed but the written forms remained static.
Words like $name$ and $make$ moved from an "ah" vowel to the modern "ay" sound, yet the spelling based on the original pronunciation was already becoming permanent.
Variation between regional dialects and printer preferences during this shift further complicated the standardization process.

Arika Okrent distinguishes between language, which is inherent to human nature, and writing, which is a technology attached to language like a tool (analogous to a fork for eating).
Human language emerges naturally in communities, but writing and printing are historical innovations that preserved the "lumps and bumps" of the English language’s evolution into a permanent, irregular system.