"The process of going through and writing and planning what we're going to be doing next week allows [people] to prioritise in their mind 'this is what I need to work on'," he said.
While we've always had an inkling, countless research confirms people remember better when writing rather than typing.
"How many times do you write a shopping list, forget it when you go to the supermarket but you can still remember what was on it?" asked Clay. "People still think better on to a piece of paper."
And while a specialist pen shop may seem like more of a big city venture, it was moving to the provinces that allowed the Clays to open a physical version of their online store - Inkt.co.nz
"In Auckland, because you're dealing with major corporates that are the landlords, they want a 10-year lease. And when we set this up, we didn't know if it was always going to work."
So the move in 2017 to Whanganui to open the physical store has been good for business.
"To have the physical presence, in addition to the online, it's a great advantage to our online presence and our online has grown a lot since we have had the physical store."
Inkt also runs calligraphy classes. The art of calligraphy, once an extremely popular and desirable discipline, is also experiencing a resurgence.
Although digital printing has largely replaced handwriting, there is still plenty of demand for professional calligraphy on certificates and university degrees. Susan Clay says it provides a flourish and gives a document a bit of character.
"You can type things all day long but you'll never be able to duplicate something that personal," she said. Inquiries for Inkt's 2021 calligraphy programme can be made online or at the shop, which is open Monday to Saturday.
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