Why your shoelaces come untied

Shoelaces_02On April Fool’s Day, not at the time being able to think of anything better, tried the old gag on two of my granddaughters:  “Your shoe is untied!”

One said, “Nice try.  But I’m wearing sandals.”  With the other, her shoe really was untied.

I report my failed joke to introduce a fascinating bit of research.  Engineers have determined why and how people’s shoelaces become untied.

The action of the foot striking the ground loosens the knot and the swinging of the leg acts much like a hand pulling on the strings.

This discovery, detailed at a physics website after the jump, contributes to the field of “knot mechanics,” which turns out to be an important topic.
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April Fools’ Day Central

If you come across any amusing April Fool’s Day pranks–on the internet, in the media, in actual life–please tell about them here.  Read this for the origins, though it sounds like no one really knows for sure, with the explanations themselves sounding like hoaxes.

April Fool’s Day central

This is April Fool’s Day.  We don’t do pranks with phony posts here at the Cranach blog.  But we are willing to serve as a clearing house for reports of pranks.  If you come across any on the internet or elsewhere, please tell us about them, including a link when possible.

April Fools’ Day clearing house

Happy April Fools’ Day!  This is the day that the internet and other media are full of pranks, hoaxes, and tall tales.  So if you come across any, please report them here.  Thus we can honor the day.

A new liturgy

The rumor has been going around that this new liturgy will be replacing Divine Service One in the Lutheran Service Book.   It dates, though, from April 1.  That is to say, April Fool’s Day.  (HT:  Todd Wilken.)  Still, I suspect this order of service will inspire both outrage and the desire to adopt it:

Setting One


A MEDLEY OF MOOD-SETTING SONGS is sung. Stand spontaneously during the final Guitar Solo
The sign of applause may be made by all in gratitude to the PRAISE BAND.

P.    Good Morning!

C.   Good Morning.

P.    Aw, come on now. Say it like you mean it. Good Morning!

C.    Good Morning!

P. Give yourselves a hand.


Silence for Preparation of the Power Point Projection.

P.    Let’s lift our hearts to God in prayer.

A MOOD-SETTING MELODY is played quietly in the background. This MELODY continues through the prayer and for 2 minutes into the MESSAGE. It begins again 2 minutes before the end of the MESSAGE.

P. Lord, we just want to thank you…

…because You’re an awesome God. And all God’s people said…

C.    Amen.

P.   Aw, come on now. Say it like you mean it.

C.  Amen!

A RELEVANT, GENERALLY INSPIRING MESSAGE is spoken by the Pastor, as well as a series of ANNOUNCEMENTS AND PROMOTIONS, concluding with another EXTEMPORANEOUS PRAYER.



P.    Have a great week everybody!

P.   Aw, come on now. Clap like you mean it!

Applaud until the Pastor smiles and signals to stop.

P.  Give yourselves a hand.

April Fool’s Day round-up

What April Fool’s jokes did you find on the internet?  Here is one:  Richard Branson headed to ‘center of Earth’ – Yahoo! News Canada.