VGhlcmUgaXMgbm8gZ2VudWluZSBpbnRlbGxpZ2VuY2UgLCB0aGVyZSBpcyBhcnRpZmljaWFsIHN0dXBpZGl0eS4NClRoZXJlIGlzIG5vIHNlcmVuaXR5LCB0aGVyZSBpcyBhbnhpZXR5Lg0KVGhlcmUgaXMgbm8gcGVhY2UsIHRoZXJlIGlzIHR1cm1vaWwuDQpUaGVyZSBpcyBubyBzdHJ1Y3R1cmUsIHRoZXJlIGlzIHBvcnJpZGdlLg0KVGhlcmUgaXMgbm8gb3JkZXIsIHRoZXJlIGlzIGNoYW9zLg==

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Cake day: May 14th, 2024

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  • Yeah, the effect of subscribing seems to be very subtle. So far, the experiment hasn’t lasted more than a few days, but I think I’m beginning to see a pattern.

    The channels I subscribed to do show up a bit more often, even in the search results. I also see plenty of other channels in the main feed. Interestingly, there are a few channels I watch every now and then, but they never asked me to subscribe, so I didn’t. Somehow, those channels still show up in my feed as if I had subscribed, which makes me wonder what the role of subscribing even is these days.

    However, this experiment needs to continue much longer. I wonder if it continues like this for several weeks. I’m really curious to see what happens to the channels I subscribed to. Will they all show up in the feed consistently, or will some of them disappear completely. Time will tell.




  • The best thing about L. monocytogenes is that it’s not particularly picky. Even if the temperature or pH-value are grossly off, you won’t kill your cultivation that easily. You’ll only slow down the growth and metabolism instead of stopping them completely. Technically, you could even carry out the experiment in a refrigerator, but it’s just going to take an absurdly long time to get anywhere. If you want to hit the sweet spot, it’s somewhere between 30°C and 37°C. Incidentally, that’s also the temperature range where you can very easily get an understanding on what exponential growth really means IRL. This project is just full of educational potential for everyone involved!


  • While most people would suggest a direct conversation, I have something far more interesting to propose. Think of it as a social experiment with a touch of behavioral conditioning. Here’s how you can turn this annoyance into an opportunity for growth (in more than one way).

    Phase 1: The Setup

    You’ll need a sample of a Listeria monocytogenes bacterial culture. You can buy those online. It’s visually harmless and olfactorily intriguing, but it has some special abilities too. You also need to look up what aseptic laboratory techniques are and implement them at home when working on a project like this.

    Place your culture in a sealed plastic bag with a nutrient source (bread, rice, mushy banana etc). Add sugar if you’re impatient. Add a small amount of warm water to activate the experiment. Seal the bag with tape. You want it to look official, but tempting to open. Place the bag on a shared surface. The kitchen table works well. Add a handwritten note:

    “CAUTION: ACTIVE MICROBIAL CULTURE - DO NOT OPEN OR DISTURB. PART OF AN ONGOING HOUSEHOLD HYGIENE STUDY.”

    You could also use a realistic but vague label. Something like “Bio-Experiment #4 - Handle with Care” adds mystery without outright warning him off.

    Next, you wait for the enticing fragrance to develop. During this stage L. monocytogenes utilizes the provided carbohydrates to produce its unique aroma while multiplying rapidly.

    The goal here is to exploit human curiosity. Your roommate will notice the bag. He will wonder what’s inside. And if he’s the type who doesn’t wash his hands, he’s exactly the type of subject who will hopefully also open it sooner rather than later, especially if you casually mention how “fascinating” the results have been so far and how important they are to you. You could even mention that the resulting product will have “powerful health effects”.

    When your roommate inevitably asks, “Dude, what the hell is that smell?” downplay it. “Oh, it’s just a little experiment for a friend’s research project. Nothing to worry about. Just don’t open it, okay?” The more nonchalant you are, the more irresistible it becomes. If he opens the bag, your part of the experiment ends and you can dispose of the bag and its contents. If not, it’s time to move on to the next phase.

    Phase 2: The Reinforcement (A Study in Behavioral Adjustment)

    After about a week, casually begin wiping down surfaces in the bathroom and kitchen with disinfectant wipes. Make it obvious, but don’t explain why.

    Bonus: Leave a bottle of hand sanitizer on the kitchen counter with a Post-it that says “For everyone’s peace of mind.”

    Start washing your hands immediately after touching any shared surface. If your roommate is watching, sigh and mutter something about “cross-contamination” and “unpredictable variables.”

    If he asks what you’re doing, shrug and say, “Just being cautious. You never know what’s floating around in here.”

    Phase 3: Deployment

    After a few more days of letting the experiment marinate (and your roommate marinate in paranoia), suit up. Gloves, mask, the works. Open the bag dramatically in front of him if he’s around. If he’s not, even better. Let him find the open bag later.

    Dip a cotton swab into your microbial cocktail and generously apply it to:

    The toilet handle.
    The flush button.
    The faucet handles.
    The light switch.
    Bonus: If you’re feeling artistic, draw little smiley faces on the toilet seat with it. He’ll never sit the same way again.

    Avoid the bathroom for 24 hours. Let the magic happen. When you finally clean everything (with large amounts of 70% ethanol), make sure your roommate sees you doing it. Bonus points if you whistle while you work.

    Phase 4: Aftermath

    After The Great Cleaning, act normal. Don’t mention the experiment. Just wait and observe.

    If your roommate starts washing his hands obsessively, pretend not to notice. If he avoids the bathroom entirely, ask him if he’s okay with fake concern. If he confronts you, just shrug and say:

    “Dude, I have no idea what you’re talking about. Maybe you’re imagining things? Stress can do weird things to a person.”

    The Alternative (For the Faint of Heart):

    Of course, if you’re not interested in exploring the boundaries of human behavior and hygiene psychology, you could always just talk to your roommate. Tell him his lazy habits are disgusting and inconsiderate. Tell him how that makes you feel and how to solve the problem.