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Description
The Human Abacus by Sean Taylor and Richard PaddonThe Human Abacus is PERFECT for the parlor or stage performer. From the minds of Sean Taylor and Richard Paddon, this brilliant effect is not only baffling and entertaining, but lends itself perfectly to either a serious or light hearted presentation. Whichever way you go with it, the impact will be the same HUGE! Early in 2018, I purchased the rights to two effects from Sean his Pi Book Test and Flash Addition routine. After playing with them for a
The Human Abacus is PERFECT for the parlor or stage performer.From the minds of Sean Taylor and Richard Paddon, this brilliant effect is not only baffling and entertaining, but lends itself perfectly to either a serious or light-hearted presentation. Whichever way you go with it, the impact will be the same -- HUGE!
Early in 2018, I purchased the rights to two effects from Sean -- his Pi Book Test and Flash Addition routine. After playing with them for a while, I realized that they fit together beautifully to form a brilliant multi-phased routine.
After a little brainstorming, the Alakazam team came up with a few killer endings...
The Mental Mathematician
For your final feat of amazing mind-power, your spectator just thinks of the digits as he inputs them into the calculator and, by reading his mind, you can solve the sum.
The Sum Swami
You can prove that you predicted the final outcome well ahead of time.
And There's More
Not only will you solve a huge sum before your spectator has even put the first line of digits into the calculator, but you have even determined the sum on the other side of the board!
Human Abacus Routine
The Book Test
You start by showing a book which contains the first 4,000 decimal positions of PI. Stating that you joined a book club which meets once a month, you were told you had to read The Life of Pi for the next meeting. Unfortunately, when you went to the meeting you were shown the error of your ways (but obviously by this time you had already read and digested the book!).
You offer the book out so your spectators can test you. Your spectator opens the book to any page, reads out any line of code but misses out the last digit. Now (and with no memory work at all), you reveal the missing digit.
It now gets even harder for you, as your spectator chooses another page and reads out any line of code and misses out any one digit (so that is any digit from any line from any page). Without batting an eyelid, you can instantly know the missing digit (remember, no memory work or crib).
The Boards
After blowing their minds with the book, you introduce 8 boards (each board is a column of 4 digits, and they are double sided). You have your spectator choose any 3 of the boards and pop them in the stand. You hand them a calculator to work out the sum and the game is afoot, man against machine!
Now, with no calculator or hidden devices, you write down the answer. You can actually solve the sum in super human speed!
Everyone will be amazed BUT you up the game. You now have your spectator choose any 5 of the boards to create a sum. Once again you solve this in super quick time (in fact, you can solve it before they have even finished inputting the first line!). As you can imagine, there are so many opportunities for gags and humor at this point.
As your grand finale you can choose any of the killer endings above!
Human Abacus comes complete with all the quality props you need:
The custom designed book test, the handmade wooden stand, and the 8 high quality printed plastic boards.
You will absolutely love the Human Abacus. Remember, this is an effect you can learn in just minutes!!!
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4.3 ★★★★★
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Product Reviews
★★★★★ 5
Power Chewer Loves This!
Size: Medium, Color: Antler
This is my dog's new favorite chew! She loves that she can hold it in her paws. I think she really loves the taste and texture of it. I don't give her antlers as I have heard too many horror stories about broken teeth. I also don't give her nylon toys as I have also heard a lot of horror stories of broken teeth as well as concerns about them digesting the plastic. This is between antlers and bully sticks, which is perfect for a power chewer. I feel comfortable with her eating the pieces that flake off this toy. She loves chewing and she will default to this toy when she wants to help calm down. I don't notice much of a smell. It does flake, but not enough I will even take a star off. Plus, it's plant based and vacuums up easily once dried. It doesn't capture her attention as much as bully sticks or beef cheek chews, but it's much less expensive over time and doesn't stink up our living room! She will also always pick this over any of her rubber chews. Great product and recommend it for all the power chewers.
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Reviewed in the United States on September 23, 2025
★★★★★ 3
Crumbly, odd texture
Size: Large, Color: Duo Pack
Neither of my dogs were very interested in these. They did chew on the antler-shaped versions more so than the infinity-style versions. When they did chew on these, they didn’t hold up well or last long. These have a strange, crumbly texture when chewed. You’ll find bits and pieces of these chews where the dogs have been chewing. Will not be reordering.
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Reviewed in the United States on April 5, 2026
★★★★★ 4
This appears to be a good alternative to the hard plastic chew toys.
Size: Large, Color: Duo Pack
My dog is a heavy chewer. I decided to try this brand out after using a different brand for quite awhile. while my dog seems to like it and carries it around (the pretzel shaped one) he doesn't seem to attack it as whole heartedly as his old brand, I'm thinking it might be the shape, we will see when he wears it out and I switch him to the antler shape. What I like most about it is it doesn't tear my hand up like the other brand did after he had been chewing it for awhile. While it is wearing down some it seems to do it in a more mild manner. Since we haven't had it long I would give this 3.5 stars because I don't know if it will last as long and not sure f it is just the shape that has him more mellow with it.
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Reviewed in the United States on January 27, 2026
★★★★★ 5
Choose your shape
Size: Medium, Color: Duo Pack
I love the idea of the dogs not eating nylabone plastic so have been searching for "healthier" options that last for heavy chewers. Two German Sherpherds, they are not big fans of the circular shaped toy but love the antler shaped one and even with both chewing on it, has not been destroyed yet and is not cutting their gums open. I am not finding pieces laying in the carpet. Recommend this
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Reviewed in the United States on May 29, 2026
★★★★★ 5
all natural - dogs love them!!
Size: Large, Color: Antler
Our golden retriever and lab both love these chews! All natural, not plastic like other brands. This is their favorite chew toy!!
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Reviewed in the United States on May 13, 2026