_:n1efa3396594946bcbf719463f1eb12d0xb7
<http://schema.org/url>
<https://substackcdn.com/image/fetch/f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fade5ed38-443e-4945-919e-434f416e6a85_640x640.png>
<https://blog.hariraghavan.com/p/pmf>