Reletter
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SPC is a home for the most talented founders and technologists exploring what's next. Our members turn the chaos of possibility into the clarity of conviction.

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Substack
PricingOnly free issuesPublishesWeekly
Issues191Founded6 months agoLast Issue18 days ago
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Latest Issues

Applications Open: SPC Founder Fellowship Fall 2026

You’ve never been able to build this fast. Prototypes in a weekend. Traction in a month. Models leapfrog each other mid-project and everyone you know is shipping.

In startups, speed is a virtue. But without direction it’s also a trap. When...

18 days ago
16

June 2026 Update

June closed out with new fundraises, acquisitions, and plenty of companies building the future, from brain-controlled interfaces to space guns.

If you’re interested in joining SPC, apply here.

Events at SPC

In SF, we hosted Snowflake C...

a month ago
9

Trusting Your Agent Is Overrated

I work with an AI agent that gets better every week. Let's call him Alex, for simplicity. Alex handles coordination, drafts emails, summarizes requests, scans calendars. About once a week he surprises me with how cleanly he handles somethin...

a month ago
23
3

Requests for Curiosity Summer 2026

Great ideas aren’t found in charted territory. Reaching them means wandering off the well-worn path and staying lost long enough to find a new frontier.

That doesn’t mean going alone.

Curiosity compounds, and it compounds faster in good c...

a month ago
15
1

Ryan Atkins Joins SPC as Partner

We’re excited to announce Ryan Atkins has joined the SPC team as Partner, Operations. Ryan’s background spans across dimensions (literally, he spent the first decade of his career teaching physics).

Ryan also spent 10+ years scaling engine...

a month ago
3

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  • South Park Commons
  • Ruchi Sanghvi
  • Aditya Agarwal
  • Evan Tana
  • Prateek Mehta
  • Ryan Atkins
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