diff --git a/src/analysis/fallbackDeclaration.js b/src/analysis/fallbackDeclaration.js
index 717960e..bea55ac 100644
--- a/src/analysis/fallbackDeclaration.js
+++ b/src/analysis/fallbackDeclaration.js
@@ -23,8 +23,6 @@ export const fallbackEdgeType: EdgeType = Object.freeze({
   defaultForwardWeight: 1,
   defaultBackwardWeight: 1,
   prefix: EdgeAddress.empty,
-  description:
-    "The fallback EdgeType for edges which don't have any other type",
 });
 
 export const fallbackDeclaration: PluginDeclaration = Object.freeze({
diff --git a/src/analysis/types.js b/src/analysis/types.js
index 3e95978..82ed4bd 100644
--- a/src/analysis/types.js
+++ b/src/analysis/types.js
@@ -96,7 +96,4 @@ export type EdgeType = {|
   // of this EdgeType. A given edge `e` is a member of the type `t` if
   // `EdgeAddress.hasPrefix(e.address, t.prefix) == true`
   +prefix: EdgeAddressT,
-  // The `description` property should be a human-readable string that makes
-  // it clear to a user what each EdgeType does
-  +description: string,
 |};
diff --git a/src/explorer/pagerankTable/Aggregation.test.js b/src/explorer/pagerankTable/Aggregation.test.js
index 0cfaca3..7aa97ef 100644
--- a/src/explorer/pagerankTable/Aggregation.test.js
+++ b/src/explorer/pagerankTable/Aggregation.test.js
@@ -157,7 +157,6 @@ describe("explorer/pagerankTable/Aggregation", () => {
       defaultForwardWeight: 1,
       defaultBackwardWeight: 1,
       prefix: EdgeAddress.fromParts(["look", "like"]),
-      description: "TODO: Add a description for this EdgeType",
     };
     function aggView(aggregation: FlatAggregation) {
       const el = shallow(<AggregationView aggregation={aggregation} />);
diff --git a/src/explorer/pagerankTable/aggregate.test.js b/src/explorer/pagerankTable/aggregate.test.js
index c14f3e6..f15f198 100644
--- a/src/explorer/pagerankTable/aggregate.test.js
+++ b/src/explorer/pagerankTable/aggregate.test.js
@@ -66,7 +66,6 @@ describe("explorer/pagerankTable/aggregate", () => {
         defaultForwardWeight: 1,
         defaultBackwardWeight: 1,
         prefix: EdgeAddress.fromParts(["foo"]),
-        description: "TODO: Add a description for this EdgeType",
       },
       bar: {
         forwardName: "bars",
@@ -74,7 +73,6 @@ describe("explorer/pagerankTable/aggregate", () => {
         defaultForwardWeight: 1,
         defaultBackwardWeight: 1,
         prefix: EdgeAddress.fromParts(["bar"]),
-        description: "TODO: Add a description for this EdgeType",
       },
       empty: {
         forwardName: "empty",
@@ -82,7 +80,6 @@ describe("explorer/pagerankTable/aggregate", () => {
         defaultForwardWeight: 1,
         defaultBackwardWeight: 1,
         prefix: EdgeAddress.empty,
-        description: "TODO: Add a description for this EdgeType",
       },
     };
     const edgeTypesArray = [edgeTypes.foo, edgeTypes.bar];
diff --git a/src/explorer/weights/EdgeTypeConfig.js b/src/explorer/weights/EdgeTypeConfig.js
index c2d36b4..1490afb 100644
--- a/src/explorer/weights/EdgeTypeConfig.js
+++ b/src/explorer/weights/EdgeTypeConfig.js
@@ -15,7 +15,6 @@ export class EdgeTypeConfig extends React.Component<{
         <EdgeWeightSlider
           name={this.props.weightedType.type.backwardName}
           weight={this.props.weightedType.forwardWeight}
-          description={this.props.weightedType.type.description}
           onChange={(forwardWeight) => {
             this.props.onChange({
               ...this.props.weightedType,
@@ -26,7 +25,6 @@ export class EdgeTypeConfig extends React.Component<{
         <EdgeWeightSlider
           name={this.props.weightedType.type.forwardName}
           weight={this.props.weightedType.backwardWeight}
-          description={this.props.weightedType.type.description}
           onChange={(backwardWeight) => {
             this.props.onChange({
               ...this.props.weightedType,
@@ -59,7 +57,6 @@ export class EdgeWeightSlider extends React.Component<WeightSliderProps> {
       <WeightSlider
         name={modifiedName}
         weight={this.props.weight}
-        description={this.props.description}
         onChange={this.props.onChange}
       />
     );
diff --git a/src/explorer/weights/EdgeTypeConfig.test.js b/src/explorer/weights/EdgeTypeConfig.test.js
index 210f45d..f9e5401 100644
--- a/src/explorer/weights/EdgeTypeConfig.test.js
+++ b/src/explorer/weights/EdgeTypeConfig.test.js
@@ -54,12 +54,7 @@ describe("explorer/weights/EdgeTypeConfig", () => {
     function example() {
       const onChange = jest.fn();
       const element = shallow(
-        <EdgeWeightSlider
-          weight={3}
-          name="foo"
-          description="Description for test slider"
-          onChange={onChange}
-        />
+        <EdgeWeightSlider weight={3} name="foo" onChange={onChange} />
       );
       const weightSlider = element.find(WeightSlider);
       return {element, onChange, weightSlider};
diff --git a/src/explorer/weights/NodeTypeConfig.js b/src/explorer/weights/NodeTypeConfig.js
index 3571799..4ebba5c 100644
--- a/src/explorer/weights/NodeTypeConfig.js
+++ b/src/explorer/weights/NodeTypeConfig.js
@@ -13,7 +13,6 @@ export class NodeTypeConfig extends React.Component<{
       <WeightSlider
         name={this.props.weightedType.type.name}
         weight={this.props.weightedType.weight}
-        description={this.props.weightedType.type.description}
         onChange={(weight) => {
           this.props.onChange({
             ...this.props.weightedType,
diff --git a/src/explorer/weights/WeightSlider.js b/src/explorer/weights/WeightSlider.js
index b631024..289cb18 100644
--- a/src/explorer/weights/WeightSlider.js
+++ b/src/explorer/weights/WeightSlider.js
@@ -6,12 +6,11 @@ export type Props = {|
   +weight: number,
   +name: React$Node,
   +onChange: (number) => void,
-  +description: string,
 |};
 export class WeightSlider extends React.Component<Props> {
   render() {
     return (
-      <label style={{display: "flex"}} title={this.props.description}>
+      <label style={{display: "flex"}}>
         <span style={{flexGrow: 1}}>{this.props.name}</span>
         <input
           type="range"
diff --git a/src/explorer/weights/WeightSlider.test.js b/src/explorer/weights/WeightSlider.test.js
index 6ef4d1f..a44e36b 100644
--- a/src/explorer/weights/WeightSlider.test.js
+++ b/src/explorer/weights/WeightSlider.test.js
@@ -12,12 +12,7 @@ describe("explorer/weights/WeightSlider", () => {
     function example() {
       const onChange = jest.fn();
       const element = shallow(
-        <WeightSlider
-          weight={3}
-          name="foo"
-          description="Description for test slider"
-          onChange={onChange}
-        />
+        <WeightSlider weight={3} name="foo" onChange={onChange} />
       );
       return {element, onChange};
     }
diff --git a/src/plugins/demo/declaration.js b/src/plugins/demo/declaration.js
index 8517b45..6b9bbac 100644
--- a/src/plugins/demo/declaration.js
+++ b/src/plugins/demo/declaration.js
@@ -28,7 +28,6 @@ export const assemblesEdgeType: EdgeType = Object.freeze({
   backwardName: "is assembled by",
   defaultBackwardWeight: 2 ** -2,
   prefix: EdgeAddress.fromParts(["factorio", "assembles"]),
-  description: "TODO: Add a description for this EdgeType",
 });
 
 export const transportsEdgeType: EdgeType = Object.freeze({
@@ -37,7 +36,6 @@ export const transportsEdgeType: EdgeType = Object.freeze({
   backwardName: "is transported by",
   defaultBackwardWeight: 2 ** -1,
   prefix: EdgeAddress.fromParts(["factorio", "transports"]),
-  description: "TODO: Add a description for this EdgeType",
 });
 
 export const declaration: PluginDeclaration = Object.freeze({
diff --git a/src/plugins/git/declaration.js b/src/plugins/git/declaration.js
index abdd106..66c588a 100644
--- a/src/plugins/git/declaration.js
+++ b/src/plugins/git/declaration.js
@@ -19,7 +19,6 @@ const hasParentEdgeType = Object.freeze({
   prefix: E.Prefix.hasParent,
   defaultForwardWeight: 1,
   defaultBackwardWeight: 1,
-  description: "TODO: Add a description for this EdgeType",
 });
 
 const nodeTypes = Object.freeze([commitNodeType]);
diff --git a/src/plugins/github/declaration.js b/src/plugins/github/declaration.js
index 9c3f639..6794ee3 100644
--- a/src/plugins/github/declaration.js
+++ b/src/plugins/github/declaration.js
@@ -76,7 +76,6 @@ const authorsEdgeType = Object.freeze({
   defaultForwardWeight: 1 / 2,
   defaultBackwardWeight: 1,
   prefix: E.Prefix.authors,
-  description: "TODO: Add a description for this EdgeType",
 });
 
 const hasParentEdgeType = Object.freeze({
@@ -85,7 +84,6 @@ const hasParentEdgeType = Object.freeze({
   defaultForwardWeight: 1,
   defaultBackwardWeight: 1 / 4,
   prefix: E.Prefix.hasParent,
-  description: "TODO: Add a description for this EdgeType",
 });
 
 const mergedAsEdgeType = Object.freeze({
@@ -94,7 +92,6 @@ const mergedAsEdgeType = Object.freeze({
   defaultForwardWeight: 1 / 2,
   defaultBackwardWeight: 1,
   prefix: E.Prefix.mergedAs,
-  description: "TODO: Add a description for this EdgeType",
 });
 
 const referencesEdgeType = Object.freeze({
@@ -103,7 +100,6 @@ const referencesEdgeType = Object.freeze({
   defaultForwardWeight: 1,
   defaultBackwardWeight: 1 / 16,
   prefix: E.Prefix.references,
-  description: "TODO: Add a description for this EdgeType",
 });
 
 const mentionsAuthorEdgeType = Object.freeze({
@@ -113,7 +109,6 @@ const mentionsAuthorEdgeType = Object.freeze({
   // TODO(#811): Probably change this to 0
   defaultBackwardWeight: 1 / 32,
   prefix: E.Prefix.mentionsAuthor,
-  description: "TODO: Add a description for this EdgeType",
 });
 
 const reactsHeartEdgeType = Object.freeze({
@@ -123,7 +118,6 @@ const reactsHeartEdgeType = Object.freeze({
   // TODO(#811): Probably change this to 0
   defaultBackwardWeight: 1 / 32,
   prefix: E.Prefix.reactsHeart,
-  description: "TODO: Add a description for this EdgeType",
 });
 
 const reactsThumbsUpEdgeType = Object.freeze({
@@ -133,7 +127,6 @@ const reactsThumbsUpEdgeType = Object.freeze({
   // TODO(#811): Probably change this to 0
   defaultBackwardWeight: 1 / 32,
   prefix: E.Prefix.reactsThumbsUp,
-  description: "TODO: Add a description for this EdgeType",
 });
 
 const reactsHoorayEdgeType = Object.freeze({
@@ -143,7 +136,6 @@ const reactsHoorayEdgeType = Object.freeze({
   // TODO(#811): Probably change this to 0
   defaultBackwardWeight: 1 / 32,
   prefix: E.Prefix.reactsHooray,
-  description: "TODO: Add a description for this EdgeType",
 });
 
 const reactsRocketEdgeType = Object.freeze({