diff --git a/Geometric-algebra.md b/Geometric-algebra.md
index 852705d..5d30c02 100644
--- a/Geometric-algebra.md
+++ b/Geometric-algebra.md
@@ -1,2 +1,2 @@
-[ganja.js](https://enkimute.github.io/ganja.js/) – Tons of examples! Also has a [Julia interface](https://github.com/chakravala/Ganja.jl).
+[ganja.js](https://enkimute.github.io/ganja.js/) – Tons of examples! We may be able to use it as a ready-made [display](https://enkimute.github.io/ganja.js/examples/coffeeshop.html#cga3d_dual_spheres_planes) and drag interface. Also has [Julia bindings](https://github.com/chakravala/Ganja.jl).
 - The $G_{6,3}$ Clifford algebra extends $G_{4,1}$ to encode all quadric surfaces. [This paper](https://doi.org/10.1007/s00006-014-0442-8) has details.
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