Geometry Nodes Self-study on how to rotate instances arranged in a curve

Nice approach, thanks!

[@pile333]

Couldn't Object info rotation affect it?

[@pikachufan25]

Unique Approach ... Let me Guess why it din't work... (Not Exactly True...) Instance on Points Rotates it by What ever the Inputs Are (in this case the Curve and the Object Info). After the Instance Node is Done the Curve gets Deleted. Meaning that Rotate Instance Doesn't Have a Curve to Follow (Cause it got Exchance for the Object info node)... in other words Blender Forgot that the Curve Existed - so you are Rotating "Nothing" in this Case. you Can look at the Spreadsheet, to see what is Happening. And the Reason why it Rotates. its Rotating the "Instance" of the Object. -And if you use the Normals it is Rotating Via the Normals (Which is the Normal Way of Rotating Objects). check at 6:00 You can Verify it - just make sure to Remove the "Join Geometry" (Causes False Positives) you will see in the Spreadsheet that there are: 0 - Control Points and 0 - Spline. (i tested myself...) Fund Challenge - Found it fun to Bug Test why it din't work, and made me Understand how to Read the Spreadsheet and Order of Procedures thanks!. xD