diff --git a/game.wren b/game.wren
index 143076a..fa0fe31 100644
--- a/game.wren
+++ b/game.wren
@@ -183,6 +183,9 @@ class game is Game {
   } //tick_camera
 
   tick_starfield(delta) {
+    //todo: 20191130 - found an interesting bug, where if you (while going super fast) travel out too far, and return to [0,0], the stars will be slightly misaligned. must have something to do with a floating point error while moving the stars around. Went to 25,000 out and saw a slight misalign
+    // to fix, can make scrolling more accurate somehow, maybe track a stars movement and see where it gets it's error. probably when having them switch sides
+    // another option is to restrict how far out the player can travel from [0,0], either with a hard limit, or some gameplay thing that makes them stay close to base
     Transform.set_pos(_star_tracker, Transform.get_pos_x(app.camera) + _cam_offset_x, Transform.get_pos_y(app.camera) + _cam_offset_y, -1)
     // loop through stars[]
     for(star in _stars) {