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@@ -17,6 +17,17 @@ October 21st, 2024
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 # Challenges for Future Analysis
 
+<!--
+As we move towards the high luminosity lhc (HL-LHC) era we know already that there will be serval computing challenges to overcome.
+One of those is the amount of required disk for the the amount of data that will be collected, which as seen in the figure on the left from the ATLAS software and computing HL-LHC roadmap, where even with aggressive R&D program the amount of disk needed would be between +10%/+20% per year of the sustained budget model.
+As we know that we won't be able to realistically store everything on disk, ATLAS is moving towards a strategy of "trading disk for CPU" where we move to computing on the fly information traditionally stored on disk.
+
+Alongside the disk use reduction plan is the PHYSLITE file format selected as the Run 4 analysis model.
+PHYSLITE is a monolithic file format that is intended to serve most Run 4 physics analsyes use cases.
+It is intended for direct use in physics analysis, with already calibrated objects allowing for people to get right to analysis, and will be able to be used directly without having to create ntuples.
+Skimming may still be desirable in some cases, but the main idea is that as a format it is ready to go for analysis.
+ -->
+
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@@ -40,8 +51,8 @@ October 21st, 2024
 
 [.center.bold[PHYSLITE]](https://atlas-physlite-content-opendata.web.cern.ch/)
 * Common file format for .bold[Run 4 Analysis Model]
-* Contains already-calibrated objects for fast analysis
 * Monolithic: Intended to serve ~80% of physics analysis in Run 4
+* Contains already-calibrated objects for fast analysis
 * Will be able to use directly without need for ntuples
 ]