In retrospect, I realize...

Meaning

Expressing regret after considering past events.

Examples

• John: 'Perhaps we should have taken a different approach.'
• Alice: '<b>In retrospect, I realize</b> that we should have consulted the experts sooner.'
• John: '<b>In retrospect, I realize</b> that our initial assumptions were flawed.'
• Alice: 'The outcome wasn't what we expected.'