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Charles “Chip” Payet
Husband, father, dentist, photographer, passionate and creative, always learning.
Husband, father, dentist, photographer, passionate and creative, always learning.


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Well, it's not really related to marketing, but I just learned today about Facebook's Legacy Contact option, should you pass away and not want your account to stay open forever.

A legacy contact is someone you choose to look after your account if it's memorialized. Once your account is memorialized, your legacy contact will have the option to do things like:

> Write a pinned post for your profile (example: to share a final message on your behalf or provide information about a memorial service).
> Note: If your timeline and tagging settings don't allow anyone other than you to post on your timeline, your legacy contact won't be able to add a pinned post to your profile once it's memorialized
> Respond to new friend requests (example: old friends or family members who weren't yet on Facebook)
> Update your profile picture and cover photo
> Request the removal of your account

You also have the option to allow your legacy contact to download a copy of what you've shared on Facebook, and we may add additional capabilities for legacy contacts in the future.

Your legacy contact can't:

> Log into your account
> Remove or change past posts, photos and other things shared on your timeline
> Read your messages
> Remove any of your friends or make new friend requests
> Add a new legacy contact to your account
> Learn more about memorialization and how to add a legacy contact to your account.
> If you're a legacy contact, learn how to manage a memorialized profile.

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"Part of what we skeptics have been trying to do over the years is identify and understand the various common narratives that seem to get in the way of science acceptance or that drive the embrace of pseudoscience. While I think we have made good progress there, the far harder part is then mitigating the negative effects of those narratives. Again – simply promoting scientific literacy is not enough (although it often helps)."

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This is so cool - literally! 😁😎
A crystal made of electrons

Electrons repel each other, so they don't usually form crystals. But if you trap a bunch of electrons in a small space, and cool them down a lot, they will try to get as far away from each other as possible - and they can do this by forming a crystal!

This is sometimes called an electron crystal. It's also called a Wigner crystal, because the great physicist Eugene Wigner predicted in 1934 that this would happen.

Only since the late 1980s have we been able to make Wigner crystals in the lab. A crystal can only form if the electron density is low enough. This is due to the uncertainty principle of quantum mechanics, which implies that even at absolute zero, electrons wiggle around - and they do this more when they're densely packed! When the density is low, they settle down and form a crystal.

But when an electron gas is rapidly cooled, sometimes it doesn't manage to form a perfect crystal. It can form a glass! This is called a Coulomb glass.

It's an amazing world we live in, where people can study a glass made of electrons.

We can do other cool stuff, like create electron crystals in 2 dimensions using electrons trapped on a thin film of metal. That's what this picture shows. It's a theoretical picture, but you can trust it, since we understand the laws of physics needed to figure out what electrons do when trapped in a disk. The density here is low enough that the uncertainty principle doesn't play a significant role - so we can visualize the electrons as dots with a well-defined position.

The lines between the dots are just to help you see what's going on. In general, a 2-dimensional electron crystal wants to form a triangular lattice. But a triangular lattice doesn't fit neatly into a disk, so there are defects - places where things go wrong.

Puzzle 1. What is happening at the blue defects?

Puzzle 2. What is happening at the red defects?

Puzzle 3. What can you say about the number of blue defects and the number of red defects? Do these numbers obey some rule?

To know if a uniform electron gas at zero temperature forms a crystal, you need to work out its so-called Wigner-Seitz radius. This is the average inter-particle spacing measured in units of the Bohr radius. The Bohr radius is the unit of length you can cook up from the electron mass, the electron charge and Planck's constant. (It's also the average distance between the electron and a proton in a hydrogen atom in its lowest energy state.)

Simulations show that a 3-dimensional uniform electron gas crystallizes when the Wigner-Seitz radius is at least 106. In 2 dimensions, it happens when it's at least 31.

For more, see:

The picture here was drawn by Arunas.rv and placed on Wikicommons on a Creative Commons Attribution-Share Alike 3.0 Unported license.


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Here I go on a new learning adventure!
Well y’all, this is how I’ll be spending the next 9.5 hours or so, as I’m on my way to São Paulo, Brazil! Departing at 10:50 from JFK, I’ll arrive about 11:25 according to the ticket. Once there, I’ll spend 3 days with 19 of my colleagues learning and improving our skills in periodontal (gum and bone) surgery for 8-9 hours/day. Then it will be another red-eye flight home, departing at 11pm Sunday and arriving about noon on Monday.

To tell the truth, I’m just as nervous as I am excited. It’s an amazing learning opportunity, but I put a lot of pressure on myself, too.

Well, almost time to take off - catch ya on the flip side!

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Opinion: This Tax Plan Puts Another Knife Into American Democracy - The Wall Street Journal

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It's thanks to women such as +Buddhini Samarasinghe who have come forward with their stories of abuse, despite the challenges and abuse that she faced, as part of the #MeToo wave that is sweeping our nation today. It really is (hopefully) just the beginning of a fundamental change in society and how we view masculinity and power.

The fact that TIME Magazine chose "The Silence Breakers" as their "Person of the Year" for 2017 is hopefully the first real recognition of these women, and hopefully it will encourage and embolden more women to do the same, to hold abusers and harassers accountable.
The Silence Breakers

I didn't realise that the Silence Breakers of the #MeToo movement had been named Time Magazine's person of the year until a friend sent me a message. He said "I counted and visualized you on the cover among the Silence Breakers this morning. - I'm proud to know you"

It was only then that I realised that my own #MeToo story was written before the Weinstein story broke - you can see the timestamp here (, because I broke my silence on September 20th, 2016.

Being a 'Silence Breaker' comes at a cost, and sometimes I'll admit that cost can feel overwhelming. I have felt so alone and so unseen through various points of this journey because it's easy when you read stories like this to forget that we, the survivors of abuse, live with that shadow over us for far longer than the interest in the story lasts. Since I began talking about what happened to me, I have had friends who inexplicably distanced themselves from me, as if I was permanently damaged, and then eventually completely disappear from my life. I have had people who initially offered support but then lost interest in even maintaining a semblance of contact after the novelty wore off for them. I have had to defend myself (and my choice to speak out) to friends, co-workers, and of course, strangers on the internet. I have had to expose my wounds and share my trauma again and again as I attempt to demonstrate how abuse doesn't happen in isolation, and bystanders are as complicit as the abusers themselves.

And all this time, the man who abused me has not done any accountability for the harm he caused. His friends who stayed silent have not done any accountability for the harm they caused. It feels unfair, and it feels imbalanced, and it makes me feel so exhausted.

It is exhausting to be a Silence Breaker. I don't do it for the attention, and I wish I didn't have an experience of abuse to share. To be clear, I don't regret sharing my story publicly, but I do wish it hadn't been so damn hard. If we truly want to honour the Silence Breakers as this year's Person of the Year, then be a part of that change. Even if you are lucky enough to never have experienced abuse or harassment, educate yourself on how you can support people like us. Amplify our voices. Hold your peers, co-workers, family, and friends accountable for their behaviour. Do better, so that we can someday live in a world where stories like this won't need to be reported because gasp abusers think twice about behaving the way they do.

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I want to tell the story of my skeptical and scientific epiphany, and I invite you to do the same. You can do it as part of this campaign, or not. It's just important that people who value science, rationality and skepticism use their voices; to be heard in conversations dominated by pseudoscience and myth.
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