被篡改的《道德经》,隐藏着什么样的秘密? – 知乎

传世本:“故有无相生,难易相成,长短相较,高下相倾,音声相和,前后相随。”

帛书本:“有,无之相生;难,易之相成;长,短之相形;高,下之相盈;音,声之相和;先,后之相随,恒也。”

二者差别不大,就是一个“之”字,但意义却完全变了。“有无相生”,与“有,无之相生”,第一个理解就像现在流行的阴阳相生一样,你生我,我生你,互为其根,自循环而无始终。但第二个理解却是“有,是由无而生的,无是有的根本”。

Source: 被篡改的《道德经》,隐藏着什么样的秘密? – 知乎

后来我读了一遍《庄子》,这才恍然大悟。《庄子》里有个叫南荣趎的,他说:“邻里的人生了病,周围的乡邻询问他,生病的人能够说明自己的病情,而能够把自己的病情说个清楚的人,那就算不上是生了重病。

玉和石的差别在哪里?玉很美,但只能让极少部分人得到,所以人人都去赞赏它;石头很糙,但却能让人人都受益,大家造屋盖房随便取用。人人都能受其惠,人人都能得到的东西,大家反而不去赞赏它了。

The missing ☑️: SwiftWebUI – The Always Right Institute – Almost always sometimes definitely right.

Beginning of the month Apple announced SwiftUI at the WWDC 2019. A single “cross platform”, “declarative” framework used to build tvOS, macOS, watchOS and iOS UIs. SwiftWebUI is bringing that to the Web ✔️

Source: The missing ☑️: SwiftWebUI – The Always Right Institute – Almost always sometimes definitely right.

Comparing a uBlox Zed-F9P GPS with a M8P without external corrections – Blog – ArduPilot Discourse

As the new uBlox Zed-F9P GPS is starting to become available I thought it would be worthwhile to do some side by side testing with the previous generation uBlox M8P. This testing is without external corrections, so both GPS modules are running as standalone GPS units.The key change with the F9P is that it is dual-band when paired with a dual-band antenna. That allows is to estimate ionospheric corrections much more accurately than can be done with a single band GPS module like the M8P.

Source: Comparing a uBlox Zed-F9P GPS with a M8P without external corrections – Blog – ArduPilot Discourse

Integration of ArduPilot and VIO tracking camera (Part 3) – Indoor autonomous flights and performance tests – Blog – ArduPilot Discourse

Following part 1 48 and part 2 24, we now have a quadcopter capable of precise indoor localization and navigation using position data provided the Intel Realsense T265. In this last part of the ROS-based portion of my ongoing series of labs 11, we will take a look at how to use Mission Planner or python program to send waypoints to ArduPilot, perform autonomous flights, and verify the tracking performance of the T265 under some challenging scenarios.

Source: Integration of ArduPilot and VIO tracking camera (Part 3) – Indoor autonomous flights and performance tests – Blog – ArduPilot Discourse

Orbitty Carrier for NVIDIA® Jetson™ TX2/TX2i/TX1 – Connect Tech Inc.

Connect Tech’s Orbitty Carrier for NVIDIA® Jetson™ TX2, TX2i and Jetson™ TX1 is designed to match the NVIDIA Jetson TX2/TX2i/TX1 module form factor. The Orbitty’s design includes 1x USB 3.0, 1x USB 2.0 OTG, 1x HDMI, 1x GbE, 1x microSD, 2x 3.3V UART, I2C, and 4x GPIO. Ideal for robotics and unmanned applications or any small form factor rugged environment.

Source: Orbitty Carrier for NVIDIA® Jetson™ TX2/TX2i/TX1 – Connect Tech Inc.