About 20 robots competed in the Beijing half marathon along with 12,000 humans. The fastest robot ran the 21 km course in 2:40, not very fast considering I run about 2 hours at age 69. The robots had human handlers running along side to change batteries and in some cases control them remotely or on a leash.
https://www.cnn.com/2025/04/19/world/video/robots-humans-half-marathon-beijing-digvid Lithium batteries can only store 200-300 KWh per kg, compared to 10,500 KWh for fat (or 2300 KWh converted to mechanical energy). An average human burns 1300 Kcal in a half marathon, equal to 1500 KWh, or 330 KWh of mechanical energy at 22% muscle efficiently. Electric motors are 80-90% efficient, so it should be possible to finish with 1.5 kg of battery if they can reproduce the mechanics of human runners. I imagine there are clever ways to get even better efficiency even without wheels. This one does impressive tricks running on 2 nVidia GPUs. https://www.engineai.com.cn/ It should be clear that China is winning the AI race. US export restrictions and tariffs (and both parties are guilty) are only dragging down the US. China is not only making huge investments in making their own chips, but developing better algorithms for the hardware they do have. -- Matt Mahoney, mattmahone...@gmail.com ------------------------------------------ Artificial General Intelligence List: AGI Permalink: https://agi.topicbox.com/groups/agi/T676de96eeff2b049-Mf69e308fe49bbb5ba8169205 Delivery options: https://agi.topicbox.com/groups/agi/subscription
