diff --git a/behavior/10_state/state_weeks.go b/behavior/10_state/state_weeks.go
deleted file mode 100644
index 691158f..0000000
--- a/behavior/10_state/state_weeks.go
+++ /dev/null
@@ -1,96 +0,0 @@
-package state
-
-import "fmt"
-
-type Week interface {
-	Today()
-	Next(*DayContext)
-}
-
-type DayContext struct {
-	today Week
-}
-
-func NewDayContext() *DayContext {
-	return &DayContext{
-		today: &Sunday{},
-	}
-}
-
-func (d *DayContext) Today() {
-	d.today.Today()
-}
-
-func (d *DayContext) Next() {
-	d.today.Next(d)
-}
-
-type Sunday struct{}
-
-func (*Sunday) Today() {
-	fmt.Printf("Sunday\n")
-}
-
-func (*Sunday) Next(ctx *DayContext) {
-	ctx.today = &Monday{}
-}
-
-type Monday struct{}
-
-func (*Monday) Today() {
-	fmt.Printf("Monday\n")
-}
-
-func (*Monday) Next(ctx *DayContext) {
-	ctx.today = &Tuesday{}
-}
-
-type Tuesday struct{}
-
-func (*Tuesday) Today() {
-	fmt.Printf("Tuesday\n")
-}
-
-func (*Tuesday) Next(ctx *DayContext) {
-	ctx.today = &Wednesday{}
-}
-
-type Wednesday struct{}
-
-func (*Wednesday) Today() {
-	fmt.Printf("Wednesday\n")
-}
-
-func (*Wednesday) Next(ctx *DayContext) {
-	ctx.today = &Thursday{}
-}
-
-type Thursday struct{}
-
-func (*Thursday) Today() {
-	fmt.Printf("Thursday\n")
-}
-
-func (*Thursday) Next(ctx *DayContext) {
-	ctx.today = &Friday{}
-}
-
-type Friday struct{}
-
-func (*Friday) Today() {
-	fmt.Printf("Friday\n")
-}
-
-func (*Friday) Next(ctx *DayContext) {
-	ctx.today = &Saturday{}
-}
-
-type Saturday struct{}
-
-func (*Saturday) Today() {
-	fmt.Printf("Saturday\n")
-}
-
-func (*Saturday) Next(ctx *DayContext) {
-	ctx.today = &Sunday{}
-}