Georg Heiler
@geoheil.com
260 followers 1K following 130 posts
building socio-technical complex systems with data | geoheil.com
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geoheil.com
good point. I think I only have < 1 hour so BI/vis will have to wait a bit. But otherwise it would be a great addition
geoheil.com
#duckdb #dagster #ray #ducklake
Reposted by Georg Heiler
duckdb.org
📈 DuckDB 1.4.0 is out! This is our first LTS release which comes with *one year of community support*. It also supports database encryption, the MERGE SQL statement and Iceberg writes.

For more details, read the announcement blog post at
duckdb.org/2025/09/16/a...
geoheil.com
A living Elo leaderboard for analytics/OLAP engines. Public benchmarks (TPC-DS/H, SSB, vendor & community posts) becomes a “match.” Upsets + context matter. Browse the board & poke holes: rebrand.ly/ey6y7hf
Home | Data inconsistencies
Data inconsistencies, architecuture and real world stories
data-inconsistencies.datajourney.expert
geoheil.com
so we go back to faster than s3 alternatives?
geoheil.com
great to see package managers mature (not hat maven/gradle) java dependency overrides are nice - but sometimes just required
geoheil.com
We are currently preparing a submission for JOSE and are looking for feedback but also more people who are interested in joining in and refining the template
Reposted by Georg Heiler
martin.kleppmann.com
People say “your imagination is the limit” to mean the possibilities are limitless, but I believe that for many people the phrase is more literally true: they really are limited by a lack of imagination more than anything else
geoheil.com
nice to see DE tooling adapted in other verticals - github.com/michimussato... here for visualization rendering
Reposted by Georg Heiler
simonwillison.net
I particularly appreciated principle 3: Agent actions and planning must be observable
Principle 3 is that Agent actions and planning must be observable. I love this principle—emphasis mine:

    We cannot ensure an agent is acting faithfully or diagnose problems if its operations are entirely opaque. Therefore, agent actions, and where feasible, their planning processes, must be observable and auditable. [...]

    Effective observability also means that the properties of the actions an agent can take—such as whether an action is read-only versus state-changing, or if it handles sensitive data—must be clearly characterized. This metadata is crucial for automated security mechanisms and human reviewers. Finally, user interfaces should be designed to promote transparency, providing users with insights into the agent’s “thought process,” the data sources it consulted, or the actions it intends to take, especially for complex or high-risk operations.

Yes. Yes. Yes. LLM systems that hide what they are doing from me are inherently frustrating—they make it much harder for me to evaluate if they are doing a good job and spot when they make mistakes. This paper has convinced me that there’s a very strong security argument to be made too: the more opaque the system, the less chance I have to identify when it’s going rogue and being subverted by prompt injection attacks.