[jamesog]

"Aesthetic" gets even stickier! In the UK I tend to more commonly hear it pronounced as "es-thetic".

The Great Vowel Shift indeed makes written English much more confusing than it perhaps should be. English is already a messy hodge-podge of a language, then our writing system started to get standardised (or standardized, if you're American!) right as pronunciation started to change, leading to the written version of words suddenly no longer being anything like the pronunciation.