Is there any way to create a Google Calendar event that repeats on the Wednesday before 2nd Sunday?

I’m attempting to create a recurring event, but am having trouble doing so with Google Calendar’s tools.

Basically, I want an event to repeat on the Wednesday BEFORE the second Sunday.

The reason I can’t use the typical “Repeat Every Second Wednesday” option is that this event is actually dependent on the Second Sunday of the month rather than the Wednesday. So, for example, if the new month starts on a Sunday, the event would be on 1st Wednesday. But if the month starts on any other day than Sunday, the event would be on Second Wednesday.

Anyone know how to achieve this?

jailbreak – Use 2nd Generation iPad (iOS 9.3.5) as touchscreen for late 2020 MacBook Air (Big Sur)

I teach online lessons and often use a digital whiteboard (Google Jamboard) to help teach. However, it can be difficult to write properly with a trackpad and so I tried using my old 2011 iPad. Unfortunately Google Jamboard (and seemingly all other apps) are unsupported on my iPad. Is there a way, through jailbreak or otherwise, to use my iPad as a touchscreen extension for my MacBook, or at least download Google Jamboard? The iPad is otherwise completely unused and SideCar unfortunately is not supported for such an old iPad.

Thank you for any help!

Access Changes Sharepoint Person/Group Field Data Type so it Can’t Be Saved into 2nd SharePoint List

I have a Sharepoint list linked in Access, where I query it to append records to a second linked Sharepoint list. The problem is with person/group fields that I can’t get to make the trip through Access.

Person/group fields in the first Sharepoint list show in Access as datatype=numeric/long integer. But I can’t create the 2nd Sharepoint list to accept the appended records from the first Sharepoint list, using either a number or person/group column.

smartcontracts – What disadvantages do 2nd layer solution/side chain smart contracts on the bitcoin network have against those on the ethereum netowrk?

If the ‘programmability’ feature of smart contracts is available on the bitcoin network, why is all of DeFi currently on the ethereum network instead?

  • Better marketing
  • More funding
  • Investors
  • Users and Exchanges that are already familiar with creating tokens on Ethereum.
  • Although projects exist, few users and devs are not interested in using them. Bitcoiners don’t want to use these projects, altcoiners already have a community and things they can use so such projects end up with less volume.
  • There is a perception among people in this space that Bitcoin can only be used as digital gold.
  • Less exchanges support Liquid, Rootstock and LN

I have tried to explain ‘DeFi’ in


Most of the gas used on Ethereum is either by DEX or stablecoins. Both things exist on Bitcoin sidechains.

People can have different opinions about difference in volume and usage. Even the centralized exchanges like Coinbase, Bitstamp, Bitfinex, Binance, Okex, FTX, Deribit, Bitmex etc. have different volume even though its not related to technology used by exchanges or things supported.

smartcontracts – Can smart contracts be set up on a side chain or 2nd layer solution?

What is a smart contract?

Smart contracts go beyond the vending machine in proposing to embed contracts in all sorts of property that is valuable and controlled by digital means. Smart contracts reference that property in a dynamic, often proactively enforced form, and provide much better observation and verification where proactive measures must fall short.

Computerized devices that respond to the environment according to price signals or other contractual terms, customer preferences, and other states or events that are encoded in them or that they are encoded to respond to. Many smart contracts in the future may be programmed using a contract drafting language for specifying their event-driven behavior.

If a loan was taken out to buy that car, and the owner failed to make payments, the smart contract could automatically invoke a lien, which returns control of the car keys to the bank. This smart lien might be much cheaper and more effective than a repo man.

Smart contracts allow a new freedom of contract that is no longer possible, if it ever was, with traditional law.

What is DeFi?

Being honest, its the new buzzword for selling your tokens to newbies for most of the projects. DeFi or Decentralized Finance in reality could be a term used for financial applications that use decentralized protocols.

Are smart contracts and decentralized finance possible with Bitcoin?


Is it theoretically possible for a side chain or second layer solution to utilize/implement smart contracts?

Smart contracts can be written using solidity for Rootstock (sidechain) and simplicity for Liquid (sidechain)

Is there is possibility that the ‘DeFi’ space eventually transitions to simply being a 2nd layer solution on the BTC network instead of on ETH?

Not sure if we should use the term “DeFi” for financial applications on top of a chain that is not decentralized, projects involving few people, governance tokens with most of the supply with VCs and devs.

Also any transition depends on market and people involved in Bitcoin projects. Honestly, lot of Bitcoin developers don’t get the appreciation they deserve for working on some of the projects. Example: Confidential transactions for Elements based sidechains, Oracles using discreet log contracts, Bisq, Joinmarket, Rootstock etc.

Lot of things are being done on Lightning Network. Its difficult to keep a track of everything happening in this space but recently saw this video for a project which provides a market place to incentivize people to seed torrents by paying with sats over the Lightning Network.

display – How to connect 2nd monitor to iMac 2020 without usb-c?

display – How to connect 2nd monitor to iMac 2020 without usb-c? – Ask Different

Attempt at a 2nd Collatz Conjecture

I am watching fascinating videos about number theory for a while now, and I put together my own little mindworld about how prime numbers and Collatz is working. Please correct me if I’m wrong, all I have is high school maths from 15 years ago to help me.

So 1) Prime numbers.

As far as I understood, mathematicians think they are random, but my understanding of random is different, so what they mean by random is uncalculable/unpredicatable. Because if I look at the primes what they are? They are the empty spaces left by a multiplication table.

Basically 13 is a prime, because none of the previous positive integers any variation of multiplication can results those numbers.

So basically if you do a multiplication table with 2×2, 2×3, etc. with all integers, the ones missing from the results will be the primes, am I correct?

1 2 3 4 5

2 4 6 8 10

3 6 9 12 15

4 8 12 16 20

5 10 15 20 25

The numbers missing from this table are: 1, 2, 3, 5, 7, 11, 13.. basically the primes, and if do a bigger table, more primes will reveal itself. Obviously this table only capable of telling primes until the prime 5 relaibly, but this is how my thinking is.

So What is really Collatz Conjecture? It basically looking for a number which is the power of 2, (or every digit is 0 in binary except the first). If it finds one, it will go towards the bottom. If it’s not, it will go toward the botton for how many 0 digits there are (by deleting them) at the end of the binary value, then change the value by multiplying with 3 and adding 1 to get another number which will have 0 at the end. It keeps repeating this loop, until every digit is 0, except the first one, then it can reach the loop.

It means that Collatz Conjecture is a proof that every number is the sum of multiple powers of 2. for example: 11 is 1*(2^3) + 0*(2^2) + 1*(2^1) + 1*(2^0). These are basically how we write numbers in binary: 1011. Collatz is looking for a number which is the power of 2, and if it doesn’t find it, it moves to another number by multiplying 3 and adding 1. Sooner or later you will get to a power of 2 and have to the loop.

So that means that other conjectures could be built, with other base system. So I took base 3, and did the same thing. The problem is, now we have 3 variant in base 3. A number ending in 0, 1 or 2.

Obviously we are looking for a number which is ending only 0’s, except for the first digit (1000, 2000, 10000, 20000, etc), so my rule is

  • If the single digit sum of all digits of N are 1, 4 or 7, then N*2+1

  • If the single digit sum of all digits of N are 2, 5 or 8, then N*2-1

  • If the single digit sum of all digits of N are 3, 6 or 9, then N/3

This -I believe- will always result in the loop 3-1-3-1

My question is, do I understand these math problems right? Does anyone did another Colletz Conjecture in another base besides base 2?

Sorry for my english, it is only my second language.

Update: And how that relates to prime numbers? I had a train of thought about it, but it’s almost 4 am now.

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