diff --git a/index.html b/index.html
index af395f4..ddaf386 100644
--- a/index.html
+++ b/index.html
@@ -678,7 +678,7 @@
 		const targetDigitSelect = document.getElementById('targetDigit');
 
 		const lrLabel = document.getElementById('learningRateLabel');
-		let learningRate = 0.5; 
+		let learningRate = 0.5;
 
 		let desiredDigit = parseInt(targetDigitSelect.value);
 
@@ -901,7 +901,10 @@
 				let totalErr = 0;
 
 				// passe sur tous les chiffres
-				for (let idx = 0; idx < chiffres.length; idx++) {
+				const indices = [...Array(chiffres.length).keys()];
+				indices.sort(() => Math.random() - 0.5);
+
+				for (const idx of indices) {
 					const x = chiffres[idx];
 					const y = (Math.floor(idx / 10) === desiredDigit) ? 1 : 0;
 					const s = predictSum(x);