What you remember (that wasn't mind-blowing) was what you thought, would be a reminder to the first sign post along a trail of thoughts that led to the much big

What you remember (that wasn't mind-blowing) was what you thought, would be a reminder to the first sign post along a trail of thoughts that led to the much bigger idea, which was the thing that was mind-blowing. But of course, it's too big of a thought to communicate via words, so all you're left with is a feeling of reminiscent awe and a trudge of disappointment.