April 22nd, 2021

• physics riemann sum Partition of a continuos function over the interval $[a,b]$ into n sub partitions. The norm is the maximum width of the n sub partitions
  • The riemann sum for right hand point in sub interval. Could also be an arbitrary point in the sub interval $c$ $S_n={\sum }_{k=1}^{n}f(a+k\frac{(b-a)}{n})\times (\frac{b-a}{n})$
  • The limit of any Riemann sum is always taken as the norm of the partitions approaches zero and the number of subintervals goes to infinity.
  • Leibniz envisioned an infitied sum of function values multiplied by infinitesimal subintervals of dx. So $f(x)$ represents a continuous selection of function values (as opposed to $f(c_k)$). The symbol then for $J$ (the definite integral that is approached by the riemann sum) is ${\int }_a^{b}f(x)dx$
  • f is integrable over $[a,b]$ if the riemann sum converges when the norm goes towards 0.
  • ${\int }_a^{b}f(x)dx={\lim }_{n\to \infty }{\sum }_{k=1}^{n}f(c_k)(\frac{b-a}{n})$
  • The variable dx represents the real numbers in the closed interval $[a,b]$. Called the dummy variable
• Lex Fridmanpodcast Max Tegmark the value alignment problem as being a fundamental issue for symbiosis or complimentary AI
  • thoughts 🤔 computers as the get closer to modelling the brain. Similar to Licklider with dynamic models of the brain, cooperative problem solving.
    • You have this ability to not take into account evolutionary self replication traits etc. when developing AI. Kind of like developing with vacuum tubes vs transistors the architecture could change completely.
• Interesting video by this kid about studying and drive
  • Similar situation to myself
  • Prioritise how deep you can get with study
  • Its great to think that younger people can develop a mindset like this so early, the potential is immense.
  • It does take a hit socially.
• Joe Rogan Shanna Swan on endocrine disruption from the following article “The truth is, these reproductive health effects are interconnected, and they are largely driven by a common cause: the presence of hormone-altering chemicals (a.k.a., endocrine-disrupting chemicals, or EDCs) in our world. These hormone-hijacking chemicals, which include phthalates, bisphenol A, and flame retardants, among others, have become ubiquitous in modern life. They’re in water bottles and food packaging, electronic devices, personal-care products, cleaning supplies and many other items we use regularly. And they began being produced in increasing numbers after 1950, when sperm counts and fertility began their decline.”
  • {{TODO}} The damaging affects of plastic, its interesting to see how we will solve this over the next century. Its a space I should look into
  • Check recycling code of plastic. 4,5,1,2 all the rest are bad for you. Do not microwave food in plastic.
• Earth day, need to keep the faith. Move forward solve problems, dont give up.
• {{TODO}} speed reading April 23rd, 2021
  • stop sub vocalisation
  • read the middle
• {{TODO}} spaced repetition
• John Breslincareer April 23rd, 2021
  • Why did I feel I needed this conversation?
    • I think John could offer maybe his thoughts on some questions I have
    • I dont really have someone to bounce ideas off or provide any sort of guidance in this area and I wanted to get the thoughts of someone from Ireland and Galway who I thought might have thoughts in this area and also with your involvement in the Portershed.
  • What am I hoping to get out of this conversation?
    • John’s views on the current state of technology, both globally and in Ireland, specifically in the startup area and around energy?
    • Is there a space there for someone like me?
    • His views on the States, trying to find some sort of community solving problems there. Is it needed?
    • Is it feasible to do some sort of masters program in Physics?
    • advice on getting into the right groups?