Sandra Halling, The Data Mavens founder and principal consultant.

Photo credit: Sarah Zollo.

Insights from Sandra

What to expect when you sign up

First, I'll introduce myself so you get a sense of how I think about systems. You're automatically added to both cadences so you can see how they feel and decide what's most helpful for you.

Field notes are sent daily.

These short messages meant to be slightly disruptive — naming failure modes, system boundaries, and patterns to watch in real time.

These are unpolished thoughts and I reserve the right to change my thinking when new data or patterns are evident. My goal is to earn a spot in your "primary inbox." You don't need to read them all to get value.

Deep-dive articles are sent periodically.

These longer messages are diagnostic. They examine real system dynamics in depth — often through anonymized case material — naming underlying mechanisms to illustrate what’s actually happening in complex systems.

What's the difference, really?

While field notes capture live observations, deep-dive pieces reflect considered analysis — connecting signals over time into clearer diagnoses and implications for how systems should actually be designed. These are published roughly every 4–6 weeks.

You can pick which cadence and style you prefer.

Get both. Get only one. You're in control. There's a button at the bottom of the messages to change your preference. Either way you'll get my musings about what works and what doesn't when it comes to systems that stick.

Also — I often have a wait list for project work. Subscribers get first notice on my availability. Timing is everything.

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