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JINTAE CHOI
I turn public data into useful intelligence.
CALENDAR
February 2051
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SELECTED DAY
Private post titles remain visible in the calendar, but their content requires administrator access. Private schedule entries are hidden.
WRITING
Recent Posts
Essay · 2026.10.12 · 12:13
Which Strategies Can Survive XYZ Markets? Diagnosing Losses and Building a Better Edge
Why strategies succeed or fail across XYZ market contexts, why backtests diverge from Forward and Actual, and how to improve each strategy family.
Essay · 2026.09.25 · 10:36
From Systems to Products: What We Keep, What We Change, and Where This Is Going
A concrete roadmap for what remains unchanged in Blackdeck and ByteCosmos, what changes now, what comes later, and what the mature products should become.
Essay · 2026.09.24 · 19:49
Do Blackdeck and ByteCosmos Have Real User Value Yet?
A cold assessment of whether Blackdeck and ByteCosmos currently give ordinary users enough reason to visit, return, and discover them through search.
Task · 2026.09.24 · 13:16
Mobile Navigation Cleanup and Content Lifecycle Controls
Fixed mobile navigation overflow in ByteCosmos and jintaechoi.com, and added safe administrator deletion for posts and schedule entries.
Task · 2026.09.24 · 12:45
Platform Localization and a Real ByteCosmos Research Sandbox
Multilingual public sites, ByteCosmos administrator controls, and an isolated SQL research workflow for data preparation, signal rules, post-entry analysis, and validation.