It’s hard to check your own work
When you read, you don’t read every word. Your eyes scan across the page in saccades. Then, your brain put things together.
The same mechanism that enables you to read this:
I cnduo’t bvleiee taht I culod aulaclty uesdtannrd waht I was rdnaieg. Unisg the icndeblire pweor of the hmuan mnid, aocdcrnig to rseecrah at Cmabrigde Uinervtisy, it dseno’t mttaer in waht oderr the lterets in a wrod are, the olny irpoamtnt tihng is taht the frsit and lsat ltteer be in the rhgit pclae.
Also makes you unable to spot your own mistakes because your brain fills in the gap of what you expect to be there.
Our proofreading rates are low and can save you some awkward feelings.