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I swim because I enjoy it, not because I'm trying to get somewhere fast.

This seems awkward and I bet you have to use your arms just to counterbalance the twist you'd get on each 'stroke' of the leg.

So even though I think it's goofy, I bet I'd like whoever came up with this. Someone who put a ton of effort into building something they thought would be interesting despite a thousand people telling them it's goofy.

Good on them.




> I swim because I enjoy it, not because I'm trying to get somewhere fast.

I run because I enjoy it, not because I’m trying to get somewhere fast. But I also bike because I enjoy it, not because I’m trying to get somewhere fast.

You seem to assume that because this thing is faster, it must automatically be less enjoyable. That’s not the case for bikes, why should it be the case here? In my opinion it sounds fun, and would probably be enjoyable.


Maybe not necessarily "faster" but there is an idea that adding any kind of technology should be avoided for recreational activities. For example, you can mountain bike with a fully-suspended e-bike, or you can struggle with a hardtail or even a road bike. Different kinds of fun, but in the former you'll wonder if it's the technology doing all the work.


> there is an idea that adding any kind of technology should be avoided for recreational activities.

That's a pretty weird idea.

Skis, snowboards, or snowshoes make traveling on snow, especially downhill, much more fun.

Bicycling, rollerblading, skateboarding (basically using anything with wheels) is very commonly considered more fun than running.

Most people who swim in cold water prefer using a wet suit rather than toughing it out.

And it's pretty fun to use a boat, surfboard, or scuba gear rather than be stuck swimming without any aids.


> Different kinds of fun, but in the former you'll wonder if it's the technology doing all the work.

"All the work" is useless hyperbol. There are things that simply can't be done on a road bike. There are things that can be done on a road bike without a significant loss of safety.

Sport technology can reduce the skill required for certain things, but it also tends to extend the envelope of what is possible. It is almost never correct to think of technology doing all the work but rather to think of it as an ability multiplier.

There are of course, times when it is beneficial to practice without a specific piece of equipment. Either for a challenge or/and to hone a specific sub skill.


there is an idea that adding any kind of technology should be avoided for recreational activities

How do you draw the line at "any kind of technology"? Isn't the bike itself "technology"? How about pneumatic tires? Or computer designed tread for optimal traction? Is a bike suspension too much technology? How about electric assist that can help you up a hill but won't propel the bike without you pedaling along with it?


Draw the line wherever you want, this isn't some kind of absolute theory of anything. Just that adding stuff to maximize your output isn't necessary to have fun.


I don't think this argument holds water (pun intended), though, since this device is completely human-powered.


> you'll wonder if it's the technology doing all the work.

We’re talking about manually propelled bikes here. The bike isn’t doing all the work, but it is pretty essential in reaching the speed and sustaining the pace.

Sure you can argue that if you strap a rocket to your bike then you aren’t doing any work, but that’s not the case in either of these examples, so what’s the purpose of going down that tangent?


It's all relative, right? Your running shoes are incredible technology. Run barefoot.


That's a fair point. My (untested) assumption would be that it would be cumbersome and weird, and I wouldn't be 'swimming'.

If I were to guess at their motivations, it might be 'what could make me go faster in the water and also be enjoyable'? I'd try it out of curiosity, sure, but I'm pretty sure it wouldn't last beyond the novelty for me.


Biking is definitely cumbersome and weird at the beginning, and it wouldn't be considered "running" by any stretch of the imagination.


A bike is just a way for runners to cheat.


>You seem to assume that because this thing is faster, it must automatically be less enjoyable.

The problem in this case is that the device is doing part of the swimming for you.


I don't understand how this is different than the running-bicycling example. How does this swim for you but a bicycle doesn't run for you?


Wait until they hear about wheelchair basketball.


I remember reading Surely You're Joking Mr Feynman and how he described back then how the world is full of dumb smart-alec and I get reminded how that still holds true.


Yuuuup. No need to waste the good ammo when you have cheap, dumb, and reliable.


Running does make pedestrian locomotion more tolerable. Save me some money versus using electric scooters though I think electric scooters are still faster.


But if you wanted to swim fast you could just use flippers, and be much more agile.


Sure, and if you want to run fast you can just use rollerblades instead of a bicycle and be be “more agile”. So what? Doesn’t mean bikes aren’t worth anything.


If you rollerblade or bike, you're no longer running. But with this underwater bicycle they are still swimming, just more awkwardly. So this isn't a new form of transportation.


Fixed gear bikes are the most fun so it kinda is true of bikes.


My favorite way to swim is with those flippers - because I go fast.

Going fast doesnt mean not enjoying it.


Yep, going fast with flippers feels great.


Feels less great for all the people in the pool that you kick.


My major hassle with touches in pools is frog kick. I have zero issues with fins, on me or others.


You don't have to do it in a crowded pool.


It's pretty neat. I'd want to try a version with a linear motion that drives the propeller for the counterbalance reasons.

I could see this as an alternative to fins offered at snorkeling places. That would make a great test environment too.


I come from family of scuba divers, and the scuba divers are a perfect market for this I think - pretty rich, pretty lazy and have to cover a lot of distance underwater


My wife and I rented the double subnado things last time we were out of town diving. Seems that fits the pretty rich and lazy market much better.


And less exertion means more time underwater.


Personally I hate swimming though I kind of like being in water, moving. So I'd definitely benefit from this, if it worked etc.


Balancing this device must have been a good problem to solve! All I can think of is “where does the other end that stick go?”


Two propellers spin in different directions might solve it I guess


That will counter the rotational force, but not the transversal up your butt.


Maybe design a pogo-stick-like action, pushing with both legs together?


Your blow hole, clearly


If you live somewhere with currents, it could be good to be able to swim at all.




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