Regarding applying without an idea:
<a href="https:&#x2F;&#x2F;fellowship.ycombinator.com&#x2F;faq&#x2F;#noidea" rel="nofollow">https:&#x2F;&#x2F;fellowship.ycombinator.com&#x2F;faq&#x2F;#noidea</a><p>&quot;We tried this once with YC, and it didn&#x27;t work well.&quot;<p>Any post-mortems about this?