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Citrini, Sam Bowman, and Internal Tech Emails posted new notes

2026-05-11 · 14:11 UTC ·Substack ·2 min read

Brief

Three Substack notes (Citrini, Sam Bowman, Internal Tech Emails) featured in the May 11, 2026 digest. Citrini cites Elon Musk claiming actuators account for 56% of Optimus’s BOM. Sam Bowman summarizes promising hair‑loss treatments. Internal Tech Emails republishes internal messages (including Sam Altman–Mira Murati texts). Engagement counts were 84/73/116 likes and 8/4/9 comments respectively.

Why it matters

Citrini (note posted ~7 days before the digest) reports Elon Musk saying actuators make up 56% of the Bill of Materials for Tesla's Optimus robot; that note recorded 84 likes, 8 comments, and 8 restacks.

Key details

  • Sam Bowman (note posted ~6 days before the digest) highlights emerging hair‑loss treatments that may be effective without travel; the post received 73 likes, 4 comments, and 6 restacks.
  • Internal Tech Emails (note posted ~5 days before the digest) republishes messages including a ‘Sam Altman texts Mira Murati…’ item; it drew the largest engagement in the digest with 116 likes, 9 comments, and 13 restacks.
Cleaned source text

Citrini, Sam Bowman, and Internal Tech Emails posted new notes

͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­͏ ­

Citrini| | | | You follow| | 7d

Elon Musk has said that actuators comprise 56% of the Bill of Materials cost for Optimus. A year ago, we wrote a deep-dive thematic primer on the public companies that…

Read More

84| 8| 8

Saloni Dattani liked

Sam Bowman| | | | You follow| | 6d

Hair loss treatments might actually work now, without you having to fly to…

73| 4| 6

Internal Tech Emails| | | | You follow| | 5d

Sam Altman texts Mira Murati…

116| 9| 13

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