BILL NYE, EVERYTHING ALL AT ONCE — Every knot is... its own little lesson in symmetry... —a microcosm of mathematical elegance. ... Like... equations, knots come in almost endless variations that may look superficially similar but have wildly different properties.

Every knot is also its own little lesson in symmetry and distribution of forces — a microcosm of mathematical elegance. ... Like mathematical equations, knots come in almost endless variations that may look superficially similar but have wildly different properties.

A. | Withdraw, retire, lose (2 wds.) | BOWOUT |

B. | Dental prosthesis | IMPLANT |

C. | Sycophantic servants | LACKEYS |

D. | Like some notebooks and teas (hyph.) | LOOSELEAF |

E. | Event involving a dark side (2 wds.) | NEWMOON |

F. | Partisan of Richard III | YORKIST |

G. | "The Hollow Men" poet | ELIOT |

H. | Modern service whose invention is credited to Ray Tomlinson in 1971 | |

I. | Clue's Mr. Boddy, for one | VICTIM |

J. | Collection of slips | ERRATA |

K. | Type of wine with an accent | ROSE |

L. | Bend | YIELD |

M. | Drum beaten with the hands (hyph.) | TOMTOM |

N. | Put one's thumb to use (3 wds.) | HITCHARIDE |

O. | Put one's foot down | INSIST |

P. | Leif Ericson, for one | NORSEMAN |

Q. | Ankle-length throwback of the miniskirt era (2 wds.) | GRANNYDRESS |

R. | Raise to another level | AMPLIFY |

S. | By a happy stroke of fate | LUCKILY |

T. | Ornithologist's record of birds sighted and identified (2 wds.) | LIFELIST |

U. | Not waste a second (2 wds.) | ACTFAST |

V. | Site of a seasonal drop (2 wds.) | TIMESSQUARE |

W. | Bone-related | OSTEAL |

X. | Monkees bandmate of Jones, Dolenz and Tork | NESMITH |

Y. | Carnation (2 wds.) | CLOVEPINK |

Z. | All tied up | EVEN |

This acrostic © 2022, The New York Times. XWord Info © 2007-2022, Jim Horne.