Speaking to E! Online, Radnor suggested that fans should not focus on the identity of the mother so much.
"To be honest, I don't care [who she is]," he said. "I don't say that dismissively. It's too long a title, but the proper title for the show should be This Is All The Stuff That Happened Before I Met Your Mother.
"When you look back you'll realise everything had to happen so that everything else could happen. That's why it's one of the few multi-camera sitcoms that people pay attention to like it's Lost or something. They really look for clues and yellow umbrellas."
Radnor refused to give away too many details about upcoming episodes of the show, but teased: "Ted gets in a relationship. I'll just say that."
How I Met Your Mother airs on Mondays at 8/7c on CBS.